Abstract: Visual Acuity Measurement Standard, 1984

VISUAL ACUITY MEASUREMENT STANDARD
1984

Approved by the International Council of Ophthalmology (1984)

This 18 page document sets standards for the measurement of visual acuity and the development of visual acuity charts.

Its includes a Preamble and Discussion of Principles for the selection of optotypes, chart design and calibration procedures.

The STANDARD discusses

The Purpose of the Standard
Definition of Clinical Visual Acuity.
Optotypes--reference symbol, specification, progression and range of optotypes,
Spacing and number of optotypes per line.
Charts--Layout, distance, illumination, contrast.
Testing of Near Visual Acuity
Testing in the Low Vision range.
Calibration procedures.

To download or view the document as a PDF file (36 p) click here.
To request an alternative format click here.

| Colenbrander Home | Email: gus@ski.org |