Table 3

Method of measuring visual acuity and contrast sensitivity

Number of studies reportingDistance (n=20)Intermediate
(n=4)
Near
(n=20)
Contrast sensitivity
(n=14)
Snellen92
LogMAR724
Regan 96% contrast chart22
Jaeger reading chart6
Rosenbaum near acuity card3
Sloan letters near acuity chart2
Pelli-Robson contrast sensitivity chart6
Vision Contrast Test System4
OtherDe Nederlanders (1 study)
Salzburg reading desk (1 study)
CGT-1000 contrast sensitivity instrument (1 study)
FACT chart/OPTEC 6500 (1 study)
Chart not specified or unclearly specified23
  • FACT, Functional Acuity Contrast Test.