Eye Exam: Anatomy and Vision Testing

An eye exam uses vision testing, orbit inspection, and an ophthalmoscopic exam to check eye health. It also helps connect eye findings with the nervous system. Before the exam, it is important to know the basic anatomy and function of the eye.

The upper eyelid should sit slightly over the iris, b...

1. Vision

Visual acuity is recorded as two numbers (e.g., 20/40 corrected). The top number indicates the distance the patient stood from the chart (20 ft), and the bottom number indicates the distance from which a person with normal vision (20/20) could see the smallest line of print accura...