Verification and measurement of the side-cut angle of corneal flap in patients undergoing LASIK surgery using FS 200 kHz femtosecond laser system versus conventional mechanical microkeratome.

They found that the differences between the microkeratome group and all IntraLase femtosecond laser groups were highly significant and the differences between the acute and inverted side-cut angles in femtoLASIK groups were statistically significant and the flap adhesion is significantly stronger in femtosecond laser group than the mechanical microketaome and an inverted side cut increases flap adhesions significantly compared with a standard side cut. 4 In our study the mean side-cut angle measured in the femtoLASIK group was 134.75° with a mean positive deviation 24.75° from the intended angle, unlike the microkeratome group, the mean side cut-angle was 44.35° with a mean negative deviation of −25.65°.

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