Visual acuity
Distance, near & conversion
Enter one acuity value and see its equivalents immediately.
Distance visual acuity input
Snellen, Decimal, LogMAR or ETDRS
Input format
Visual acuity result
Snellen
20/20 · 6/6
Decimal
1.00
LogMAR
0.00
ETDRS
85 letters*
* ETDRS is a mathematical letter-score reference. Jaeger is chart-dependent. Calculated equivalence does not replace standardized chart testing.
Visual acuity result
20/20 · Decimal 1.00 · LogMAR 0.00 · ETDRS 85
OptiX Pro provides mathematical calculations, reference information, and fitting assistance. It does not replace professional clinical examination, manufacturer fitting guidelines, or professional judgement. Contact lens selection and prescription must be clinically verified.