Comfortable and Stabilizing Chin & Forehead Rest Attachment for Slit Lamp Configurations

A Single-Center Proof Of Concept Study of a Novel Comfortable and Stabilizing Chin & Forehead Rest Attachment for Slit Lamp Configuration Devices

In this study, participants will be imaged using two Optical Coherence Tomography (OCT) devices: device N, a standard conventional OCT device with an invention (comfortable chin and forehead rest that can be adjusted to fit each individual's size) attached to the device; and device C, the standard conventional OCT device with no invention attached. The investigators will assess whether the chin and forehead rest attachment (invention) provides a more comfortable experience for patients.

Inclusion Criteria:

• Healthy volunteers; OR,
• AMD, diabetic retinopathy, central serous chorioretinopathy, and/or glaucoma or glaucoma suspects or any other suspected eye disease

Group-Specific Inclusion Criteria:

-- There are no group-specific inclusion criteria for patients with AMD, diabetic retinopathy, and central serous chorioretinopathy.

Healthy Volunteers

• A normal clinical ophthalmic examination.
• Reliable VF, reproducible glaucoma hemifield tests labeled within normal limits on at least one test.
• Good quality (adequate signal strength ≥ 6/10, without segmentation algorithm failure and motion artifacts > 1 vessel diameter) RNFL and Ganglion Cell Inner Plexiform Layer (GCIPL) OCT, within normal limits.

Primary Open Angle Glaucoma (POAG)

• Clinical characteristics of glaucoma: optic nerve head (ONH) abnormalities: global rim thinning, rim notch, or disc hemorrhage; retinal nerve fiber layer (RNFL) defect.
• Typical glaucomatous field loss in reliable VF, reproducible glaucoma hemifield tests labeled outside normal limits on at least two consecutive tests.
• Good quality (adequate signal strength ≥ 6/10, without segmentation algorithm failure and motion artifacts > 1 vessel diameter) RNFL and GCIPL OCT, labeled outside normal limits with typical glaucomatous RNFL and GCIL thinning.

Normal Tension Glaucoma (NTG)

• Identical to POAG criteria with IOP recorded at ≤ 21 mmHg at any time point.

Exclusion Criteria:

An individual who meets any of the following criteria will be excluded from participation in this study:

- Any medical treatment (e.g., chronic corticosteroid, hydroxychloroquine, chloroquine, thioridazine, canthaxanthine) or conditions that affect VF (e.g., stroke) and retinal thickness other than glaucoma.