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The Jaeger Chart is a small handheld chart that is used to test near vision. It includes blocks of text in various font sizes that a patient reads at a close range, often 14 inches. Scores are given based on the smallest print that can be read.

The Snellen Chart is a chart with rows of letters of decreasing size which is used to measure visual acuity from a standard distance, usually 20 feet. A score such as 20/20 or 6/6 is considered 'normal' vision.

The Early Treatment Diabetic Retinopathy Study (ETDRS) chart is considered the gold standard for measuring visual acuity for research purposes and uses a series of charts to get an accurate assessment of acuity over a range of distances.

The Logarithm of the Minimum Angle of Resolution (LogMAR) Chart measures a subject's visual acuity using a geometric progression of letter size and standardized score, which provides more precise and repeatable results than the Snellen chart.