Table 2.

Prevalence of refractive errors (percentage) by degree of lens opacity

LOCS III	Grade	Myopia		Hyperopia
		% (95% CI)	OR (95% CI)	% (95% CI)	OR (95% CI)
Nuclear	0	19.20 (14.88−23.51)	1	52.94 (47.47−58.41)	1
	1	20.06 (15.86−24.25)	1.06 (0.72−1.54)	55.93 (50.74−61.13)	1.17 (0.87−1.56)
	2	16.45 (12.26−20.64)	0.83 (0.54−1.29)	60.86 (55.34−66.37)	1.42 (1.02−2.00)*
	3	24.17 (16.40−31.94)	1.36 (0.82−2.25)	57.5 (48.53−66.47)	1.15 (0.74−1.79)
	4	60.00 (36.48−83.52)	7.23 (2.69−19.43)*	40.00 (16.48−63.52)	0.53 (0.20−1.38)
	5	75.00 (19.41−99.36)**	13.34 (1.37−129.64)*	0
Cortical	0	18.43 (15.61−21.26)	1	55.02 (51.4−58.65)	1
	1	20.98 (16.23−25.73)	1.12 (0.79−1.57)	58.39 (52.64−64.14)	1.23 (0.92−1.64)
	2	31.40 (21.39−41.40)	1.89 (1.14−3.14)*	58.14 (47.50−68.78)	1.21 (0.74−1.96)
	3	24.00 (6.01−41.99)	1.43 (0.55−3.73)	52.00 (30.95−73.05)	0.90 (0.42−1.96)
	4			100
Posterior subcapsular	0	18.76 (16.20−21.31)	1	56.49 (53.25−59.74)	1
	1	20.83 (14.63−27.04)	1.19 (0.81−1.77)	55.36 (47.76−62.95)	0.96 (0.66−1.38)
	2	41.46 (25.72−57.21)	2.98 (1.59−5.6)*	51.22 (35.25−67.19)	0.85 (0.43−1.70)
	3	40.00 (11.92−68.08)	3.10 (0.94−10.25)	53.33 (24.74−81.93)	0.82 (0.29−2.33)

LOCS: Lens opacity classification system, CI: Confidence interval, OR: Odds ratio,

^*Statistically significant at the 5% level,

^**The 95% CI was calculated using binomial distribution