Table 3

Summary of measured refractive values and refractive components in the group of diabetic twins(n=52) and the group of non-diabetic twins (n=38)

	Eye	n	Mean	Median	SD	Min	Max
+ IDDM:
Refraction (D)	R	52	−0.63	−0.25	1.92	−7.75	2.75
	L	52	−0.67	−0.26	2.03	−9.19	3.13
AL (mm)	R	51	23.39		0.95	21.55	26.09
	L	51	23.38		1.05	21.58	26.78
CC (mm)	R	52	7.76		0.28	7.01	8.50
	L	52	7.77		0.29	7.04	8.42
ACD (mm)	R	51	3.49		0.31	2.89	4.04
	L	51	3.48		0.37	2.49	4.26
LT (mm)	R	51	3.88		0.30	3.39	4.75
	L	51	3.90		0.35	3.20	5.18
LPW (D)	R	50	24.93		2.09	21.13	29.93
	L	50	25.10		2.39	20.63	32.46
− IDDM:
Refraction (D)	R	38	0.09	0.57	1.67	−5.62	3.00
	L	38	0.01	0.62	1.78	−6.37	2.62
AL (mm)	R	37	23.37		0.96	20.98	26.03
	L	37	23.35		0.99	21.53	26.25
CC (mm)	R	38	7.74		0.29	7.07	8.37
	L	38	7.71		0.29	7.05	8.37
ACD (mm)	R	37	3.62		0.27	2.89	4.09
	L	37	3.60		0.27	2.94	4.03
LT (mm)	R	37	3.74		0.24	3.32	4.28
	L	37	3.76		0.24	3.31	4.28
LPW (D)	R	36	23.87		1.43	20.54	26.67
	L	36	23.87		1.51	20.50	27.47

IDDM = insulin dependent diabetes mellitus; AL = axial length; CC = corneal curvature radius; ACD = anterior chamber depth; LT = lens thickness; LPW = lens power (calculated).