Comparative study between LASIK procedures using ultra-thin Moria sub-Bowman keratomileusis (SBK) 90, Moria M2 90 microkeratomes, and femto- LASIK regarding visual acuity

Introduction: Laser-assisted in situ keratomileusis (LASIK) is the most frequently performed refractive surgical procedure for the treatment of myopia. Astigmatism and hyperopia. The development of a corneal flap, the initial phase of LASIK, is the most crucial step and has the most impact on the visual result of the whole surgery. The flap generation is followed by excimer laser ablation of the exposed stroma, and then the flap is relocated. There are three ways to accomplish a narrow flap. Aim of the study: To compare the changes in visual acuity of the eyes in the three groups. Subjects and Methods: The study represents a comparative study. Patients were separated into three groups. In group A, the mechanical microkeratome ultra-thin Moria SBK 90 was used to create the flap with superior hinge, the suction ring chosen based on the corneal curvature nomogram, the used blade was intended to produce 90 m flap, the same blade for both eyes starting with the right eye, the flap was lifted, excimer laser ablation was done by ALLEGRETTO Wavelight EX500. Results: There was no statistically significant difference between the three groups in the visual acuity of the eyes. Conclusion: Different LASIK procedures didn’t have direct impact on the visual acuity of eyes.