Snellen’s chart is a standard eye testing chart used to measure visual acuity. It consists of rows of letters decreasing in size, viewed from a fixed distance. Widely used in clinics and hospitals, it helps assess clarity of vision and detect refractive errors accurately.
Type: Visual acuity chart
Material: Paper / plastic laminated
Design: Letters of decreasing size
Standard Distance: 6 meters (20 feet)
Illumination: Backlit / wall-mounted
Use: Vision testing and screening
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