. 2021 Dec 16;15:4707–4714. doi: 10.2147/OPTH.S323348

Table 3.

Comparison of Change in Visual Function by Operated Eye, Pre-Operative BCVA, and Type of Cataract

Questionnaire/Group	Mean Change (± SD)	Median Change (IQR)	p-value
VF-14
1st eye (n = 22)	14.83 ± 12.53		0.448^a
2nd eye (n = 26)	17.90 ± 14.89		0.448^a
IVI
1st eye		−10 (13.5)	0.541^b
2nd eye		−6.5 (12.5)	0.541^b
VF-14
6/6 or better (n = 15)	17.57 ± 12.77		0.721^a
6/7.5 or 6/9 (n = 33)	16.01 ± 14.41		0.721^a
IVI
6/6 or better		−7 (12)	0.824^b
6/7.5 or 6/9		−9 (15.5)	0.824^b
VF-14
PSCC (n = 14)	20.50 ± 13.56		0.201^a
No PSCC (n = 34)	14.85 ± 13.76		0.201^a
IVI
PSCC		−16 (17.25)	0.040^b
No PSCC		−6 (9.5)	0.040^b

Notes: ^aIndependent samples t-test and ^bMann–Whitney U-test comparing change in visual function from baseline to 4 months between 1st eye patients and 2nd eye patients, between patients with pre-operative best corrected visual acuity of 6/6 or better vs patients with pre-operative best corrected visual acuity of 6/7.5 or 6/9 in the operated eye, and between patients with posterior sub-capsular cataract vs patients with cortical and/or nuclear cataract only.

Abbreviations: BCVA, best corrected visual acuity; SD, standard deviation; IQR, inter-quartile range; VF-14, Visual Function Index; IVI, Impact of Visual Impairment questionnaire; PSCC, posterior sub-capsular cataract.