A precision-engineered set of Sloan Letter charts, specifically designed with evenly spaced logMAR optotypes for vision assessment within the Armed Forces. The system includes eleven distinct acuity levels, systematically ranging from 20/200 to 20/10 in uniform increments. Each line is numerically or alphabetically labeled to facilitate clear patient instruction. The set comprises three individual charts, each presenting a unique optotype sequence to mitigate the risk of memorization and ensure accurate visual acuity evaluation.

Key Features:

• Features 20 ft and 6-meter notations.
• Testing distance: 20 feet/6 meters.