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Ophthalmic Assistant

Category - Keratometry, Tonometry, and Refractometry

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If a patient comes in for a keratometry reading, a gonioscopy, and instillation of eye drops, which should be performed first?

Keratometry reading
Gonioscopy
Instillation of eye drops
Order does not matter

Explanation

Answer: A - Keratometry reading

If a patient comes in for a keratometry reading, a gonioscopy, and instillation of eye drops, the keratometry reading should precede all the other treatments or examinations. The reason for this is that a gonioscopy and the eye drops may compromise the surface of the cornea, and therefore result in faulty measurements. The accuracy of the measurements is especially crucial when a patient is having a keratometry reading before ocular surgery.

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