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Ophthalmic Technician

Category - Lensometry and Spectacle Skills

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What is Slab-off?

A method of removing horizontal prism from lenses for patients with anisometropia
A method of removing vertical prism from lenses for patients with anisometropia
A method of adding prism to overcome double vision
A method of removing a layer of lens in monofocal glasses

Explanation

Answer: B - Slab-off is a method of removing vertical prism from lenses for patients with anisometropia. It is given to overcome induced prism causing difficulty in using bifocal segment.

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Ophthalmic Technician

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Ophthalmic Technician

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