Name one tool that is used for assessing visual acuity?

The Snellen chart is a standardized tool used to measure distance visual acuity by assessing a client’s ability to read letters or symbols at a fixed distance, typically 20 feet (6 meters). It is one of the most commonly used instruments in clinical and screening eye examinations. Rationale: Visual acuity assessment evaluates the sharpness or clarity of vision, specifically how well the eye can distinguish fine details at a standardized distance. The Snellen chart consists of rows of letters that decrease in size from top to bottom. The client is asked to read the smallest line they can see clearly, covering one eye at a time to assess each eye separately. Results are recorded as a fraction, such as 20/20. The top number represents the testing distance (20 feet), and the bottom number represents the distance at which a person with normal vision can read the same line. For example, 20/40 vision means the client can see at 20 feet what a person with normal vision can see at 40 feet. Other tools used in visual acuity assessment include the Tumbling E chart (for clients who cannot read letters) and the Jaeger chart (for near vision). However, the Snellen chart remains the primary tool for standard distance vision testing in clinical settings. The nurse should ensure proper lighting, correct positioning, and that the client wears corrective lenses if normally used during the assessment, unless otherwise instructed