Snell-Sterling visual efficiency scale
visual efficiency scale, Snell-Sterling
A representation of visual efficiency as a function of visual acuity, in which are taken into account other factors such as perception, experience, etc. in estimating how much vision a person has for a given visual acuity.
|Table V2 Relationship between visual acuity and the Snell-Sterling visual efficiency scale (in percentage round figures)|
|visual acuity||Efficiency||loss of vision|
|(m)||(ft)||(in %)||(in %)|
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann