2.3. Method evaluation

The routine cataract surgery was done by the same surgeon (MHD) with the device of CDM or LCM. Ten eyes were included in each group. The area outer/inner 5.5-mm CCC ring, the furthest/nearest distance from the capsule margin to the IOL margin, the CCC total coverage IOL area were measured with self-designed analysis software (Fig. ​(Fig.55).

The area outer/inner 5.5-mm CCC ring (the irregular area circled by the ideal 5.5-mm CCC ring and the actual CCC margin demonstrated with the red and green arrows), the furthest/nearest distance from the capsule margin to the IOL margin (6.0 mm ring), the CCC total coverage IOL area (the area between IOL optic margin and the actual CCC margin) were measured for final analysis.

Statistical analyses were performed with commercial software (SPSS ver. 13.0; SPSS Inc.). An independent sample t test was performed to compare the quantitative measurement results between groups. All tests had a significance level of 5%.