Conventional LASIK, Femto-LASIK and PRK in Low and Moderate Myopia
Conditions
Brief summary
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).
Interventions
PROCEDURELaser refractive surgery
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). All patients will be subjected to routine comprehensive preoperative examinations including manifest uncorrected distant visual acuity (UCDVA), best corrected distant visual acuity (BCDVA), slit-lamp examination, intraocular pressure, and fundus examination. Corneal topography and corneal aberrometry will be performed on all patients using Sirius's Scheimpflug-Placido topography (CSO, Florence, Italy). The CSO topography system analyzes a total of 6144 corneal points of a corneal area within a circular annulus outlined by an inner radius of 0.33 mm and an outer
Sponsors
Sohag University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SCREENING
Masking
NONE
Intervention model description
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).
Eligibility
Sex/Gender
ALL
Age
18 Weeks to 45 Weeks
Healthy volunteers
No
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.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Changes of corneal higher-order aberrations | 1 year | Corneal aberrometry will be performed using Sirius's Scheimpflug-Placido topography (CSO, Florence, Italy). |
| Changes of total ocular higher-order aberrations | 1 year | Wavefront refraction will be acquired by the iDesign aberrometer (Hartmann-Shack Aberrometer) |
Contacts
Primary Contactahmed abdeen, Master
Outcome results
None listed