Ophthalmic optics - Chart displays for visual acuity measurement - Printed, projected and electronic
STANDARD published on 1.5.2017
Designation standards: ČSN EN ISO 10938
Classification mark: 195006
Catalog number: 501826
Publication date standards: 1.5.2017
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
This International Standard applies to displays of optotypes generated by chart projectors and all other visual acuity measurement systems that use recognition of high-contrast optotypes and that are designed for general use, including optotypes printed on media (either opaque or intended for transillumination), those generated electronically, and those produced by optical projection