This standard specifies the minimum requirements and test methods for eye chart projectors. The eye chart projector includes an optical projector and a screen. The projector projects the visual mark onto the screen and is used to detect the visual sensitivity, refractive characteristics and binocular vision function of the human eye.
YY 0764-2009 Referenced Document
GB 11533-1989 Standard Logarithmic Vision Chart (Abolished)
GB 9706.1 Medical electrical equipment—Part 1: General requirements for basic safety and essential performance*， 2020-04-09 Update
GB/T 14710 Enviromental requirement and test methods for medical electrical equipment
ISO 8596:1994 Ophthalmic optics; visual acuity testing; standard optotype and its presentation
ISO 8597:1994 Optics and optical instruments - Visual acuity testing - Method of correlation optotypes