Certified Ophthalmic Assistant Practice Exam

Which process is beneficial for measuring corneal astigmatism?

1. Photography

2. Refraction

3. Ophthalmoscopy

4. Keratometry

The correct answer is: Keratometry

Keratometry is the process that is beneficial for measuring corneal astigmatism. Keratometry is a non-invasive test that measures the curvature of the cornea, providing essential information about the shape and power of the cornea. This measurement is crucial in determining the amount and axis of corneal astigmatism, which is a refractive error caused by an irregularly shaped cornea. By accurately measuring corneal astigmatism, eye care professionals can prescribe corrective lenses or recommend surgical procedures to help patients achieve clearer vision. Photography, refraction, and ophthalmoscopy are important in different aspects of eye care but are not specifically used for measuring corneal astigmatism. Photography may be useful for documentation, refraction is essential for determining the overall prescription for glasses or contact lenses, and ophthalmoscopy is primarily used for examining the interior structures of the eye such as the retina.