What is peripheral iridectomy?
A procedure in which a small section of peripheral iris is excised through a limbal incision. Very effective and safe surgical procedure for glaucoma treatment. Some disadvantages: Operating room procedure. May be complicated by bleeding, infection, wound leak, incomplete iridectomy, zonular or lens disruption.
What is the purpose of iridectomy?
An iridectomy is an iris resection procedure where a portion of its tissue is removed treat an eye condition that affects directly or indirectly the iris, the part of the eye that helps control the size of the pupil to improve the focus of light. It is found immediately after the cornea.
What is peripheral iridotomy?
Background. Laser peripheral iridotomy (LPI) is the preferred procedure for treating angle-closure glaucoma caused by relative or absolute pupillary block. LPI eliminates pupillary block by allowing the aqueous to pass directly from the posterior chamber into the anterior chamber, bypassing the pupil.
What is superficial keratectomy?
Superficial keratectomy involves mechanical excision of the epithelium, Bowman’s membrane and superficial stroma with a sharp blade or a rotating diamond burr. From: Ocular Surface Disease: Cornea, Conjunctiva and Tear Film, 2013.
How painful is a superficial keratectomy?
It is common to experience varying degrees of discomfort beginning 30 to 90 minutes following the surgery as the numbing drops begin to wear off. Many patients describe this sensation as feeling like an eyelash is in the eye or lodged beneath the contact lens.
How is a superficial keratectomy performed?
Superficial Keratectomy Procedure The manual smoothing is performed with a blunt, hand-held instrument, allowing precise control over the tissue being removed. The mechanical technique involves a burr instrument that finely and evenly smoothes the corneal surface.