Assessment of Optical Quality at Different Contrast Levels in Pseudophakic Eyes

Table 5

OQAS parameters (mean ± SD) of normal () and pseudophakic () eyes, stratified by age group.

Parameter	Age group	Normal group	Pseudophakic group
OSI (OSI value)	50s	1.82 ± 1.19	2.05 ± 1.28	0.625
	60s	1.92 ± 1.11	2.32 ± 1.52	0.329
	70s	3.96 ± 2.29	2.15 ± 1.31	0.008
	Total	1.99 ± 1.41	2.21 ± 1.38	0.940
MTF cut-off value (C/deg)	50s	22.29 ± 7.88	25.73 ± 11.38	0.273
	60s	23.09 ± 10.72	22.36 ± 10.93	0.773
	70s	15.83 ± 9.14	22.04 ± 9.48	0.090
	Total	23.41 ± 9.72	23.29 ± 10.72	0.925
Strehl ratio	50s	0.13 ± 0.07	0.15 ± 0.15	0.356
	60s	0.12 ± 0.05	0.14 ± 0.13	0.452
	70s	0.10 ± 0.03	0.13 ± 0.03	0.442
	Total	0.13 ± 0.07	0.18 ± 0.47	0.498

-test.
OSI: objective scattering index; MTF: modulation transfer function.