Optics and Refraction — Flashcards

What type of lens provides three distinct focal points (distance, intermediate, and near)?

High hypermetropia: error of _____D

The drawback of Ishihara pseudo-isochromatic chart is that it cannot detect _____ colour defect

A patient with emmetropia, hypermetropia, myopia less than 1D would exhibit _____ movement of red reflex when retinoscopy is done from a distance of 1m without cycloplegia.

_____ is a condition in which there is a difference in the size of the image formed by the two eyes.

The total refractive power of schematic eye: _____ D

Cutting-off of the peripheral rays by the _____ is one of the natural mechanisms to decrease aberration of the eye

The angle subtended by the optotype =_____ x 5

A patient with myopia more than 1D would exhibit _____ movement of red reflex when retinoscopy is done from a distance of 1m without cycloplegia.

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