Certified Paraoptometric Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

The keratometer is the tool specifically designed to measure the curvature of the cornea. This device provides critical data for optometrists and ophthalmologists in assessing corneal shape and quality, which is essential in various contexts, such as fitting contact lenses, diagnosing astigmatism, and planning for refractive surgery. By determining the curvature, the keratometer helps in understanding how light will bend as it enters the eye, thus enabling accurate prescriptions and better patient outcomes.

In contrast, an ophthalmoscope is utilized to examine the interior structures of the eye, primarily the retina, and does not provide curvature measurements. The slit lamp is employed to conduct a thorough examination of the anterior segment of the eye, including the cornea and lens, but it does not directly measure curvature. Lastly, an optometer assesses the refractive error of the eye but does not measure the corneal curvature on its own. Therefore, the keratometer stands out as the correct tool for this specific measurement.