Ophthalmic Surgery — Flashcards

Flashcard 61: What is the principle of Nd:YAG laser?_____

Answer: Photodisruption

Flashcard 62: Phacoprobe is based on the principle of _____

Answer: Piezoelectric effect

Extra: The phacoprobe handpiece contains piezoelectric crystals that convert electrical energy into high-frequency mechanical vibrations (ultrasonic energy). The lens is then fragmented via two main mechanisms: 1. **Mechanical impact** (the vibrating tip directly striking the lens) 2. **Cavitation** (formation and collapse of microbubbles creating shockwaves)

Flashcard 63: Which cataract surgery is contraindicated in kids?_____

Answer: ICCE

Flashcard 64: The best irrigating fluid for cataract surgery is _____

Answer: balanced salt solution plus glutathione (BSS plus).

Flashcard 65: What is the best method of lens delivery?_____

Answer: Cryoextraction

Flashcard 66: The most important factor in the prevention of postoperative endophthalmitis is preoperative preparation with _____.

Answer: povidone iodine

Flashcard 67: _____ IOL used to correct pre-existing astigmatism

Answer: Toric

Flashcard 68: The surgery of choice for panophthalmitis is _____

Answer: evisceration

Flashcard 69: _____ syndrome is a type of IOL malposition where intraocular lens subluxes inferiorly

Answer: Sunset

Flashcard 70: Laser iridotomy by _____ laser is performed as a definitive treatment for PACG

Answer: Nd:Yag