iridotomy
Pronunciation: ear-ih-dot-oh-mee
Creation of a hole in the iris to relieve pupillary block or angle closure.
Full Definition
Iridotomy is a procedure that creates a small hole in the peripheral iris to establish communication between the anterior and posterior chambers of the eye. It is primarily performed to treat or prevent angle-closure glaucoma by relieving pupillary block. The procedure can be performed using laser (most commonly YAG laser) or surgically. Laser peripheral iridotomy (LPI) is typically done as an outpatient procedure and is highly effective in preventing angle-closure attacks in predisposed individuals. The iridotomy should be positioned in the peripheral iris, preferably under the upper eyelid to avoid visual disturbances.
Usage
Usage note: Specify laser vs. surgical technique and location when documenting. LPI is common abbreviation.
In Context
- "Bilateral laser peripheral iridotomies were performed prophylactically for narrow angles." — Treatment plan
- "The iridotomy was patent and functioning well at the six-month follow-up visit." — Follow-up examination