Huanyu Visual Acuity Chart Digital 19inch LCD Electronic Optical Eye Charts with 44+ Visual Targets and 5 Display Methods Optometry Tester Projector with Remote

"HUANYU DIGITAL VISUAL ACUITY SERIES Compare Products By Model Standard power consumption Maximum screen resolution Screen ratio Size Weight Model 19in LCD Visual Acuity Chart 20W 19in 4kg Add to Cart 4.4 out of 5 stars 21.5in LCD Visual Acuity Chart 25W 21.5in 5kg Add to Cart 4.2 out of 5 stars 23in LCD Visual Acuity Chart 25W 23in 6kg Add to Cart 4.5 out of 5 stars"