Optics and Refraction — Flashcards

Pinhole prevents the peripheral rays and also reduces the _____ aberration, thus improving visual acuity

The refractive index is the maximum at the _____

Magnification produced by direct ophthalmoscopy is approximately _____ times

Most common type of myopia is _____

Early Treatment of Diabetic Retinopathy Study (ETDRS) Chart is used for measuring _____

Low myopia, when the error is d _____D.

Shot silk appearance of fundus is seen in _____

In duochrome test, if the patient sees the letters of the _____ side clearer, he is overcorrected

What type of lens is the following? _____

The distance between the points of convergence (focus) of the vertical and horizontal rays in a strum's conoid is called the _____ of strum.