Table 2

Relation of acuity threshold to the use of vision tests other than distance acuity

Number of surgeons Thresholds worse than 6/6 Thresholds 6/6 or better No acuity criterion
Use any other test(s) routinely (a)965022
Do not use other tests routinely (b)14010533
Percentage using other tests routinely [100×a/(a+b)]41%32%40%
Use any other test(s) routinely or occasionally22714951
Do not use other tests964
Percentage using other tests routinely or occasionally96%96%93%
Use near acuity tests routinely or occasionally22514951
Do not use near acuity tests1063
Percentage using near acuity tests routinely or occasionally96%96%94%
Use contrast sensitivity tests routinely or occasionally24167
Do not use contrast sensitivity tests20413647
Percentage using contrast sensitivity tests routinely or occasionally11%11%13%
Use glare tests routinely or occasionally29145
Do not use glare tests19313948
Percentage using glare tests routinely or occasionally13%9%9%
  • The missing values can be calculated by subtracting the total numbers in each of the five groupings from 473.