Changes of Higher-Order Aberrations After Different Types of LASIK in Myopia

Changes of Corneal and Total Ocular Higher-Order Aberrations After Conventional LASIK, Femto-LASIK and PRK in Low and Moderate Myopia

This prospective comparative interventional study will enroll patients with low and moderate myopia who seek laser vision correction at Sohag Center for LASIK and Corneal Surgeries, Sohag, Egypt. Eyes included will be divided into 3 groups according to the type of refractive surgery used (conventional LASIK, Femto-LASIK and PRK) and each group will be subdivided into 2 groups according to the degree of myopia (low and moderate).

Inclusion Criteria:

Age: 18 - 45 years old.

Refraction:

Low and moderate grades of myopia will be included:

(According to manifest refraction) low ([0] - ≤ [-3] diopters) Moderate ([-3] - ≤ [-6] diopters) With cylinder ≤ [-1.5] diopters.

Exclusion Criteria:

Any ocular surgery or medication, corneal opacities, pregnancy, lactation and keratoconus.