Snellen chart (visual acuity test).

Snellen chart (visual acuity test).

Snellen chart, Optometry, Visual Acuity Testing

Visual acuity test Information

Snellen chart, Psychology Wiki

What Is Visual Acuity?

11 Tall x 7 Wide 20 Foot Test Distance Can be wall mounted

Snellen Vision Eye Test Chart 20 ft (6 Meter) Distance

Reduced Visual Acuity

Comparative Study of the Snellen iPad App versus Traditional Light Box Snellen Chart in Distance Visual Acuity

Eye Chart Lea Symbols 10 Foot Distance Acuity Test

All About the Eye Chart - American Academy of Ophthalmology

Visual Acuity and Contrast Sensitivity