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Ophthalmic Technician

Category - Keratometry, Tonometry, and Refractometry

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Scissoring shadow on retinoscopy is seen in which condition?

High astigmatism
Keratoconus
Both A and B
Neither A nor B

Explanation

Answer: C - Scissoring shadow on retinoscopy is seen in high astigmatism and keratoconus.

When there is unusual difference in the curvature of the cornea in different meridians it causes the red reflex on retinoscopy to split like that of a scissor.

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