Comparatively analysing the postoperative optical performance of different intraocular lenses: a prospective observational study

Table 2 BCDVA and the OQAS optical metrics at 6th months postoperatively among the 4 groups

	Mon	SegRef	Dif	EDoF	K/F	P	power
BCDVA^a	0.10 (0.10)	0.10 (0.16)	0.10 (0.21)	0.10 (0.10)	7.439	0.059	70.3%
PVA 100%^a	-0.04 (0.21)	0.22 (0.2)	0.10 (0.38)	0 (0.16)	30.962	< 0.001***	99.9%
PVA 20%^a	0.15 (0.30)	0.40 (0.18)	0.30 (0.42)	0.15 (0.13)	24.910	< 0.001***	99.9%
PVA 9%^a	0.40 (0.22)	0.52 (0.18)	0.52 (0.40)	0.40 (0.22)	17.537	0.001***	99.8%
SR^a	0.17 (0.05)	0.12 (0.04)	0.13 (0.10)	0.15 (0.04)	18.812	< 0.001***	99.9%
OSI^a	1.10 (0.60)	1.90 (1.10)	1.70 (1.20)	1.25 (0.70)	32.257	< 0.001***	99.9%
MTF cut-off frequency (c/deg)^b	33.38 (9.49)	18.9 (5.29)	25.97 (11.82)	32.47 (7.85)	13.782	< 0.001***	99.9%

^aNonnormally distributed continuous data were described as the median (interquartile range)
^bNormally distributed continuous data were described by mean (standard deviation)
Mon = monofocal IOLs; SegRef = segmental refractive IOLs; Dif = diffractive IOLs; EDoF = extended depth of focus IOLs; BCDVA = best corrected distance visual acuity; PVA 100% = predicted visual acuity at contrast of 100%; PVA 20% = predicted visual acuity at contrast of 20%; PVA 9% = predicted visual acuity at contrast of 9%; SR = strehl ratio; MTF = Modulation transfer function; OSI = objective scattering index
The OQAS optical metrics include PVA 100%, PVA 20%, PVA 9%, SR, MTF cutoff frequency, and OSI
BCDVA and PVA were shown in logMAR (logarithm of the minimum angle of resolution)
*P < 0.05, **P ≤ 0.01; ***P ≤ 0.001

ISSN: 1471-2415