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Ophthalmic Technician

Category - Keratometry, Tonometry, and Refractometry

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Which of the following methods is NOT used for measuring intraocular pressure?

Applanation tonometer
Tonopen
Non - contact tonometer
Keratometer

Explanation

Answer: D - The keratometer is used for measurement of the radius of curvature of the cornea. It also measures the diopteric power of the cornea. However it does not measure the intraocular pressure. Instruments which help in the measurement of intraocular pressure are called tonometers. For example Applanation tonometer, tonopen, Schiotz tonometer and Non - contact tonometer are different types of tonometers.

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