Optic Nerve Head Strain as Biomarker for Glaucoma

This study is measuring strain on the optic nerve head (the spot where the optic nerve connects to the back of the eye) to see if it can serve as an early warning sign (biomarker) for glaucoma. Glaucoma is a disease that damages the optic nerve and can lead to vision loss, and detecting it early is critical. **You may be eligible if...** - You are an existing glaucoma patient at Johns Hopkins - You are able to undergo eye imaging - You can communicate in English - You have no significant hearing impairment **You may NOT be eligible if...** - You are unable to undergo the required eye imaging - You are not able to read or are illiterate - You have significant hearing impairment - You do not speak English Talk to your doctor to see if this trial is right for you.