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To assess repeatability of electroretinogram and visual evoked potential in clinical practice
To assess repeatability of electroretinogram in evaluation of retinal function and visual evoked potential in evaluation of visual pathway in clinical practice.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Electroretinogram test (ERG) | Active Comparator | ERG test will be done for each subject twice and compare the results to assess repeatability of the test. |
|
| Visual evoked potential test (VEP) | Active Comparator | VEP test will be done for each subject twice and compare the results to assess repeatability of the test. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Electroretinogram (ERG) | Diagnostic Test | Applying electrodes to assess retinal function |
|
| Measure | Description | Time Frame |
|---|---|---|
| Repeatability of ERG amplitude. | ERG amplitude measured in nano volt (nV). | Changes from baseline measurements and at one week. |
| Measure | Description | Time Frame |
|---|---|---|
| Repeatability of ERG latency. | Latency of ERG measured by millisecond (msec). | Changes from baseline measurements and at one week. |
| Measure | Description | Time Frame |
|---|---|---|
| Repeatability of VEP amplitude. | VEP amplitude measured in nano volt (nV). | Changes from baseline measurements and at one week. |
| Repeatability of VEP latency. | Latency of VEP measured by millisecond (msec). |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Ahmed Abdelshafy, MD | Contact | 01222328766 | ahmad4lg@gmail.com |
| Name | Affiliation | Role |
|---|---|---|
| Ahmed A Abdelshafy, MD | Benha University | Study Chair |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Ahmed Abdelshafy Tabl | Recruiting | Banhā | Benha | 13511 | Egypt |
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| ID | Term |
|---|---|
| D012164 | Retinal Diseases |
| D014786 | Vision Disorders |
| ID | Term |
|---|---|
| D005128 | Eye Diseases |
| D012678 | Sensation Disorders |
| D009461 | Neurologic Manifestations |
| D009422 | Nervous System Diseases |
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| ID | Term |
|---|---|
| D004596 | Electroretinography |
| D005074 | Evoked Potentials, Visual |
| ID | Term |
|---|---|
| D003941 | Diagnostic Techniques, Ophthalmological |
| D019937 | Diagnostic Techniques and Procedures |
| D003933 | Diagnosis |
| D004568 | Electrodiagnosis |
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| Visual evoked potential (VEP) | Diagnostic Test | Applying electrodes to assess visual pathway function |
|
| Changes from baseline measurements and at one week. |
| D012816 |
| Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D005071 | Evoked Potentials |
| D000071080 | Cortical Excitability |
| D055724 | Electrophysiological Phenomena |
| D010829 | Physiological Phenomena |
| D009424 | Nervous System Physiological Phenomena |
| D055687 | Musculoskeletal and Neural Physiological Phenomena |
| D009799 | Ocular Physiological Phenomena |