Ocular Imaging Physics — Flashcards

Flashcard 1: Examination through hazy media is possible in which type of ophthalmoscopy?

Answer: Indirect ophthalmoscopy

Extra: Indirect ophthalmoscopy uses a brighter light source and allows the examiner to bypass media opacities (like cataracts) more effectively than direct ophthalmoscopy.

Flashcard 2: Retinal vessels reach _____ ora at approximately 40 weeks of gestation.

Answer: temporal

Flashcard 3: A total of _____ Purkinje images are formed in normal eyes.

Answer: 4

Flashcard 4: In fundoscopy, more the power of condensing lens, _____ the magnification and more the field of view

Answer: less

Flashcard 5: The refractive index of the lens in the nucleus is _____

Answer: 1.41

Flashcard 6: Anterior chamber depth is determined using _____-scan

Answer: A

Flashcard 7: The refractive index of the lens in the peripheral cortex is _____

Answer: 1.386

Flashcard 8: lux is the unit for _____

Answer: illumination of light 

Extra: 

Flashcard 9: In anterior uveitis, aqueous **cells** exhibit Brownian movement and aqueous **flare** is based on the Tyndall phenomenon; both are demonstrated on _____.

Answer: slit lamp examination

Flashcard 10: Ability to percieve depth is known as grade _____ of binocular vision, also called stereopsis

Answer: III