Certified Paraoptometric (CPO) Practice Exam 2025

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What is typically monitored using pachymetry?

Changes in pupil size
Intraocular pressure variations
Corneal thickness and related disorders
The curvature of the retina

The correct answer is: Corneal thickness and related disorders

Pachymetry is primarily used to measure corneal thickness, which is crucial for diagnosing and managing various ocular conditions. Monitoring corneal thickness helps in assessing the health of the cornea and can provide valuable information for conditions such as glaucoma, keratoconus, and after refractive surgery. Understanding these variations in corneal thickness is vital since it can influence intraocular pressure readings and overall eye health. This role of pachymetry in evaluating corneal disorders makes it a key tool in optometric practice. The other options are related to different aspects of eye care but do not pertain specifically to what pachymetry assesses. For instance, changes in pupil size are evaluated through pupillometry, while intraocular pressure is typically measured with tonometry. The curvature of the retina is assessed with different techniques and is not the focus of pachymetric assessments.