Certified Paraoptometric (CPO) Practice Exam 2025 – All-in-One Study Guide to Ensure Exam Success!

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What does a keratometer measure?

Intraocular pressure

The curvature of the cornea

A keratometer is specifically designed to measure the curvature of the cornea, which is essential in understanding the shape and refractive properties of the eye. This measurement is particularly important for fitting contact lenses, assessing corneal conditions, and preparing for refractive surgeries like LASIK. The curvature readings provided by the keratometer help optometrists and ophthalmologists evaluate the cornea's health and its ability to focus light correctly onto the retina, which is crucial for clear vision. Other options, such as measuring intraocular pressure or visual acuity, pertain to different diagnostic tools and procedures, making the measurement of corneal curvature the primary focus of what a keratometer assesses.

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Visual acuity

Pupil dilation

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