Table 2.

Correlation of fixation grade and inter-eye acuity difference

Fixation Grade (n = 61)	IEAD in LogMAR median/mean ± SD (range)	P Value (difference from the immediate next level of fixation grade)
CSM (n = 27)	0/0.3 ± 0.1 3, (0-0.6)	<0.001
CSUM (n = 19)	0.3/0.3 ± 0.4, (0-1.7)	0.1
CUSUM (n = 4)	0.95/0.4 ± 0.05, (0.5-1.5)	0.2
UCUSUM (n = 11)	1.4/0.71 ± 0.48, (0.5-1.5)	-

CSM: Central, steady, maintained, CSUM: Central, steady, unmaintained, CUSUM: Central, unsteady, unmaintained, UCUAUM: Uncentral, unsteady, unmaintained, SD: Standard deviation