Gonioscopy
gonioscopy · eye drainage angle exam · glaucoma angle check
The doctor places a special lens on your eye to look at the area where fluid drains out of the eye.
For glaucoma or suspected glaucoma, and before laser treatment for glaucoma.
⏱ Duration: usually 5 to 15 minutes; the doctor tells you the result right away
Be sure to tell your doctor
How to prepare
- Contacts. If you wear contact lenses, they will be taken out before the exam. Bring your case.
- Getting there. Your vision may be a little hazy for a while. Plan your trip home.
What to bring
- Your ID
- Your glasses
- A contact lens case
How it goes
- The eye is numbed with drops
- You rest your chin on a stand
- The doctor gently places a lens with gel on your eye
- You are asked to look in different directions
- The lens is removed, and the eye is rinsed if needed
What you'll feel
- Usually no pain, just a touch
- An urge to blink. The doctor will help hold the eyelid
Afterwards
- Do not rub your eye while the numbing drops are working
- Mild haziness and redness usually pass quickly
Contact a doctor straight away if
- Severe pain or worse vision after the exam: see a doctor
Common questions
Does it hurt?
Usually not. The eye is numbed with drops.
How is this different from a regular exam?
A regular exam does not show the drainage angle. That needs a special lens.