GLETSF Digital Visual Acuity Eye Chart, LCD Electronic Optical Tester with Remote Control and USB Interface for Multiple Targets,21.5in

Multifunctional digital vision chart with adjustable screen brightness and up to 3 rows and 8 columns of sight marks. Supports flat or wall-mounted installation for flexible use. Diverse visual targets including E, C, letters, numbers, and children's symbols. Includes red-green test, astigmatism detection, and color blindness testing for comprehensive vision assessment. High precision with working distance of 1-6m and adjustable accuracy of 0.1m. Comes with a remote control that extends range to 8m for easy operation. User-friendly design with adjustable brightness up to 250 cd/m2 and USB interface. Ultra-thin, lightweight, and features professional image processing for fast switching. Wide application in hospital ophthalmology and optical shops. Clear visual markings with digital processing for simple use in any room, ideal for optometry tests.