The components employed in the placebo formulation are the same as those used for the active formulation except MDI-1228_mesylate is absent.

Body temperature (℃) will be measured while the participant is at rest in a supine or semi-supine position (after ≥ 5 minutes resting supine or semi-supine), to monitor and record any abnormal clinically significant changes from baseline and incidence of such changes after treatment until the last visit.

Assessment of general appearance (normal/abnormal) will be performed at screening, and may be performed at various scheduled/unscheduled time points if deemed necessary by the Investigator, to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until last visit.

Assessment of HEENT (normal/abnormal) will be performed at screening, and may be performed at various scheduled/unscheduled time points if deemed necessary by the Investigator, to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until last visit.

Assessment of neck (including thyroid and nodes) (normal/abnormal) will be performed at screening, and may be performed at various scheduled/unscheduled time points if deemed necessary by the Investigator, to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until last visit.

Assessment of cardiovascular system (normal/abnormal) will be performed at screening, and may be performed at various scheduled/unscheduled time points if deemed necessary by the Investigator, to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until last visit.

Assessment of respiratory system (normal/abnormal) will be performed at screening, and may be performed at various scheduled/unscheduled time points if deemed necessary by the Investigator, to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until last visit.

Assessment of gastrointestinal system (normal/abnormal) will be performed at screening, and may be performed at various scheduled/unscheduled time points if deemed necessary by the Investigator, to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until last visit.

Assessment of renal system (normal/abnormal) will be performed at screening, and may be performed at various scheduled/unscheduled time points if deemed necessary by the Investigator, to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until last visit.

Assessment of neurological system (normal/abnormal) will be performed at screening, and may be performed at various scheduled/unscheduled time points if deemed necessary by the Investigator, to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until last visit.

Assessment of musculoskeletal system (normal/abnormal) will be performed at screening, and may be performed at various scheduled/unscheduled time points if deemed necessary by the Investigator, to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until last visit.

Assessment of skin (normal/abnormal) will be performed at screening, and may be performed at various scheduled/unscheduled time points if deemed necessary by the Investigator, to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until last visit.

12-lead ECG measurements will be performed to monitor and record any abnormal clinically significant changes in heart rate (beats/min) as well as the result interpretation from baseline and incidence of such changes after treatment until the last visit. All ECG measurements will be recorded in triplicate (repeat for 3 times), with 1- to 2-minute intervals between ECG readings.

12-lead ECG measurements will be performed to monitor and record any abnormal clinically significant changes in PR interval (milliseconds) as well as the result interpretation from baseline and incidence of such changes after treatment until the last visit. All ECG measurements will be recorded in triplicate, with 1- to 2-minute intervals between ECG readings.

12-lead ECG measurements will be performed to monitor and record any abnormal clinically significant changes in QRSD interval (milliseconds) as well as the result interpretation from baseline and incidence of such changes after treatment until the last visit. All ECG measurements will be recorded in triplicate, with 1- to 2-minute intervals between ECG readings.

12-lead ECG measurements will be performed to monitor and record any abnormal clinically significant changes in QTcF (milliseconds) as well as the result interpretation from baseline and incidence of such changes after treatment until the last visit. All ECG measurements will be recorded in triplicate, with 1- to 2-minute intervals between ECG readings.

12-lead ECG measurements will be performed to monitor and record any abnormal clinically significant changes in RR interval (milliseconds) as well as the result interpretation from baseline and incidence of such changes after treatment until the last visit. All ECG measurements will be recorded in triplicate, with 1- to 2-minute intervals between ECG readings.

CVA (measured using Snellen chart) will be assessed to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until the last visit.

Intraocular pressure (mmHg) will be assessed to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until the last visit.

Light response pupil test (positive/negative) will be performed to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until the last visit.

Extraocular movement test will be performed to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until the last visit.

Slit-lamp examination will be performed to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until the last visit.

Corneal fluorescein staining test will be performed to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until the last visit.

Dilated fundus examination will be performed at screening, Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes from baseline and the incidence of such changes after treatment until the last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in red blood cell distribution width (%) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in hemoglobin (g/dL) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in hematocrit (%) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in red blood cell count (cells/μL) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in white blood cell count (cells/μL) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in absolute neutrophil count (cells/μL) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in neutrophil percentage (%) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in absolute lymphocyte count (cells/μL) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in lymphocyte percentage (%) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in absolute monocyte count (cells/μL)) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in monocyte percentage (%) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in absolute basophil count (cells/μL) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in basophil percentage (%) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in absolute eosinophil count (cells/μL) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in eosinophil percentage (%) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in platelet count (cells/μL) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in mean cell hemoglobin (pg/cell) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in mean cell volume (fL) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in mean cell hemoglobin concentration (g/dL) from baseline and the incidence of such changes after treatment until last visit.

Hematology tests will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in mean platelet volume (fL) from baseline and the incidence of such changes after treatment until last visit.

A coagulation test will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in INR from baseline and the incidence of such changes after treatment until last visit.

A coagulation test will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in aPTT (seconds) from baseline and the incidence of such changes after treatment until last visit.

A coagulation test will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in PT (seconds) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in blood sodium (mmol/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in blood potassium (mmol/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in blood chloride (mmol/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in blood calcium (mmol/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes from baseline in blood bicarbonate (mmol/L) and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes from baseline in blood albumin (g/dL) and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in total protein (g/dL) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in blood creatinine (mg/dL) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in blood creatine kinase (units/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes from baseline in estimated GFR (mL/min) and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in blood urea (μmol/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in AST (units/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in ALT (units/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in GGT (units/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in ALP (units/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in blood phosphate (mmol/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in total bilirubin (mg/dL) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in direct bilirubin (mg/dL) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in indirect bilirubin (mg/dL) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in blood amylase (units/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in cholesterol (mg/dL) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in HDL/cholesterol ratio from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in HDL cholesterol (mg/dL) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in LDL/HDL cholesterol ratio from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in LDL cholesterol (mg/dL) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in non-HDL cholesterol (mg/dL) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in triglycerides (mmol/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in uric acid (μmol/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in lactate dehydrogenase (units/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in blood magnesium (mmol/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in blood glucose (mmol/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in anion gap (mmol/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in adjusted calcium (mmol/L) from baseline and the incidence of such changes after treatment until last visit.

Blood biochemistry will be measured at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in globulin (g/dL) from baseline and the incidence of such changes after treatment until last visit.

Urinalysis will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in pH from baseline and the incidence of such changes after treatment until last visit.

Urinalysis will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in specific gravity from baseline and the incidence of such changes after treatment until last visit.

Urinalysis will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in urine glucose (negative/+/++/+++) from baseline and the incidence of such changes after treatment until last visit.

Urinalysis will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in urine protein (negative/+/++/+++) from baseline and the incidence of such changes after treatment until last visit.

Urinalysis will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in urine bilirubin (mg/dL) from baseline and the incidence of such changes after treatment until last visit.

Urinalysis will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in urine ketones (negative/+/++/+++) from baseline and the incidence of such changes after treatment until last visit.

Urinalysis will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in urine blood (negative/+/++/+++) from baseline and the incidence of such changes after treatment until last visit.

Urinalysis will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in urine nitrite (mg/dL) from baseline and the incidence of such changes after treatment until last visit.

Urinalysis will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in urine urobilinogen (mg/dL) from baseline and the incidence of such changes after treatment until last visit.

Urinalysis will be performed at screening, baseline (not required if screening assessment done within 3 days), Day 2 visit (Part A) or Day 8 visit (Part B) to monitor and record any abnormal clinically significant changes in leucocyte esterase (mg/dL) from baseline and the incidence of such changes after treatment until last visit.

Scores of conjunctival hyperemia (0 to 4 scores, a higher score indicates a more severe condition) will be assessed to record the change from the pre-dose (Day -1) scores to the post-dose scores (Day 2 for Part A, Day 8 for Part B) in the study eye.

Scores of corneal staining (0 to 5 scores, a higher score indicates a more severe condition) will be assessed to record the change from the pre-dose (Day -1) scores to the post-dose scores (Day 2 for Part A, Day 8 for Part B) in the study eye.

Tmax refers to the time a drug takes to reach the highest concentration in the plasma after administration. It will be measured after the subject receives a single dose (Part A) or multiple doses (Part B) of MDI-1228_mesylate Ophthalmic Solution by instillation into the study eye (2 drops).

T1/2 refers to the time a drug takes to be eliminated to half of the highest concentration in the plasma after administration. It will be measured after the subject receives a single dose (Part A) or multiple doses (Part B) of MDI-1228_mesylate Ophthalmic Solution by instillation into the study eye (2 drops).

Systemic CL refers to the total volume of fluid cleared of drug from the body per unit of time, usually expressed in mL/min. It will be measured after the subject receives a single dose of MDI-1228_mesylate Ophthalmic Solution by instillation into the study eye (2 drops).

Vd refers to fluid volume that would be required to contain the amount of drug present in the body at the same concentration as in the plasma. It will be measured after the subject receives a single dose of MDI-1228_mesylate Ophthalmic Solution by instillation into the study eye (2 drops).

MRT reflects the average time a drug molecule spends in the body. It will be measured after the subject receives a single dose of MDI-1228_mesylate Ophthalmic Solution by instillation into the study eye (2 drops).

AUC0-t refers to area under the plasma concentration-time curve until time t and reflects the actual body exposure to drug after administration at time t. It will be measured after the subject receives a single dose of MDI-1228_mesylate Ophthalmic Solution by instillation into the study eye (2 drops).

AUC0-∞ refers to area under the plasma concentration-time curve until infinity and reflects the total body exposure to drug. It will be measured after the subject receives a single dose of MDI-1228_mesylate Ophthalmic Solution by instillation into the study eye (2 drops).

Css_min means the lowest concentration of drug in the blood within a steady-state dosing interval. It will be measured after administration of multiple doses of MDI-1228_mesylate Ophthalmic Solution by conjunctival instillation (2 drops).

Css_max means the highest concentration of drug in the blood observed after intermittent dosage administration. It will be measured after administration of multiple doses of MDI-1228_mesylate Ophthalmic Solution by conjunctival instillation (2 drops).

Css_av means the average drug concentration reached during a steady-state intermittent dosing interval. It will be measured after administration of multiple doses of MDI-1228_mesylate Ophthalmic Solution by conjunctival instillation (2 drops).

CL means the volume of fluid cleared of drug from the body per unit of time, usually expressed in mL/min. It will be measured after administration of multiple doses of MDI-1228_mesylate Ophthalmic Solution by conjunctival instillation (2 drops).

AUCss reflects the exposure of drug in the body at steady state. It will be measured after administration of multiple doses of MDI-1228_mesylate Ophthalmic Solution by conjunctival instillation (2 drops).

DF reflects difference between the highest and lowest concentration of drug in the body at steady state. It will be measured after administration of multiple doses of MDI-1228_mesylate Ophthalmic Solution by conjunctival instillation (2 drops).