ChapterOphthalmology Optics and Refraction

Lenses and Prisms

Free notes, MCQs, tables & flowcharts for UPSC-CMS Ophthalmology

10Questions
10Flashcards
1Tables & Flowcharts

Sample Questions

1

Identify the visual field defect depicted by the boxed pair of diagrams at the bottom of the image. The left diagram represents the right eye (OD), the right diagram represents the left eye (OS), and the dark regions indicate visual field loss.

ABinasal hemianopia

BBitemporal hemianopia

CHomonymous hemianopia

DAltitudinal visual field defect

2

What is the true statement about retinoscopy with a plane mirror?

AIn myopia, the red glow moves in the same direction.

BRetinoscopy is done at 1 meter away from the patient.

CIn hypermetropia, the red glow moves in the opposite direction.

DIn emmetropia, the red glow moves in the opposite direction.

3

What type of refractive error is astigmatism, which is characterized by non-spherical curvature of the cornea or lens?

ASpherical aberration

BCurvatural ametropia

CIndex ametropia

DAxial ametropia

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