Optics and Refraction — Flashcards

Flashcard 11: What type of lens is the following? _____

Answer: Trifocal

Flashcard 12: _____ (flip-cross technique) is used to refine the power and axis of the cylindrical lens.

Answer: Jackson’s cross cylinder

Flashcard 13: What type of lens is the following? _____

Answer: Kryptok bifocal

Flashcard 14: major cause of visual impairment in 0-49  years age is _____

Answer: refractory errors

Extra: 

Flashcard 15: 28d5190692654e40ad9eaeb07f342e61-ao-1

Answer: light reflection factor

Extra: 

Flashcard 16: 28d5190692654e40ad9eaeb07f342e61-ao-2

Answer: light reflection factor

Extra: 

Flashcard 17: f197c79a80244bd7a7c4b112aff4634f-oa-4

Answer: Lorentz formula

Extra: indicators of obesity

Flashcard 18: _____ test is based on chromatic aberration and is used to refine the final sphere in subjective refraction

Answer: Duochrome

Flashcard 19: Pathological myopia presents with _____ eyeballs, large cornea and deep AC

Answer: prominent

Flashcard 20: The smallest letter on Jaeger's chart is designated as _____ or J1 and the largest is N48.

Answer: N5