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. 2006 Nov 23;6:35. doi: 10.1186/1471-2415-6-35

Table 2.

ETDRS acuity and threshold character sizes for single letters, isolated words and paragraphed text

ETDRS acuity (logMAR) Threshold character size for words (logMAR) Threshold character size for paragraphed text (logMAR)

Patients Before training Immediately after training 3 months later Before training Immediately after SLO training 3 months later Before training Immediately after training 3 months later

1 3 and 4 6 and 7 9 and 10 1 3 and 4 6 and 7 9 and 10 1 3 and 4 6 and 7 9 and 10

MT 1.1 0.96 0.9 1.0 1.1 1.4 1.4 0.9 1.3 1.2 1.3 0.9 1.2 1.4 1.5 1.4 1.3 1.5
SL 1.46 1.1 1.14 1.0 1.2 1.4 1.4 0.9 1.1 1.2 1.2 0.9 1.2 1.2 1.2 1.4 1.2 1.4
LG 1.24 1.2 1.12 1.1 1.2 1.5 1.4 0.8 1.0 1.2 1.0 0.8 0.8 1.1 1.2 1.4 1.2 1.2
AA 1.02 0.84 0.86 1.0 1.1 1.1 1.1 0.8 1.0 1.1 1.0 0.8 1.0 1.0 1.1 1.2 1.1 1.2
GM 1.36 1.2 1.1 1.15 1.5 > 1.5 > 1.5 0.8 1.1 1.2 1.1 0.9 1.2 1.2 1.3 1.5 1.4 1.5

1: 1 letter; 3 and 4: words of 3 and 4 letters; 6 and 7: words of 6 and 7 letters; 9 and 10: words of 9 and 10 letters. The mean value obtained for each patient and for each stimulus type is reported.