NEN-EN-ISO 10938
Ophthalmic instruments - Chart projectors
inactive
| Organization: | NEN |
| Publication Date: | 1 August 1998 |
| Status: | inactive |
| Page Count: | 12 |
| ICS Code (Ophthalmic equipment): | 11.040.70 |
scope:
Specifies together with ISO/DIS 15004, requirements and test methods for chart projector systems for the projection of targets used for the determination of visual acuity, the refractive status and the binocular functions of the human eye. A chart projector system includes an optical projector and a screen. This standard takes priority over the semihorizontal standard ISO/DIS 15004, if differences exist.
Document History
October 1, 2016
Ophthalmic optics - Chart displays for visual acuity measurement - Printed, projected and electronic
NEN-EN-ISO 10938 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...
NEN-EN-ISO 10938
August 1, 1998
Ophthalmic instruments - Chart projectors
Specifies together with ISO/DIS 15004, requirements and test methods for chart projector systems for the projection of targets used for the determination of visual acuity, the refractive status and...
June 1, 1996
Ophthalmic instruments - Chart projectors
Specifies together with ISO/DIS 15004, requirements and test methods for chart projector systems for the projection of targets used for the determination of visual acuity, the refractive status and...