An eye examination is a series of tests conducted by an optometrist or ophthalmologist to assess vision and eye health. During the exam, various tools and techniques are used to check for refractive errors, such as nearsightedness or farsightedness, and to evaluate the overall condition of the eyes. The examination typically includes a visual acuity test, where letters on a chart are read, and a slit lamp examination to inspect the front structures of the eye. Additional tests may be performed to check for glaucoma, cataracts, or other eye diseases, ensuring proper diagnosis and treatment.