This document discusses various clinical uses and tests involving the eyes and pupils, including: 1. Tests to examine the cornea, pupil shape and reactions, and lens structures. 2. The iris shadow test to determine if the eye is phakic or pseudophakic. 3. The eclipse test to measure anterior chamber depth and diagnose conditions. 4. Observing the "glistening reflex" of an intraocular lens to determine its power. 5. Swinging flashlight tests to detect anisocoria and diagnose neurological conditions. 6. Examining pupils' physical, pharmacological, and pathological characteristics. 7. Testing the pupil light reflex and near response to evaluate the neurological exam of