Corneal Epithelial Thickness Mapping by Anterior Segment Optical Coherence Tomography in Patients With Refractive Errors

Refractive errors are among the most common ocular conditions affecting visual acuity. Corneal epithelial thickness has been suggested to play a role in the optical properties of the eye and may vary among different refractive states. This observational study aims to evaluate corneal epithelial thickness mapping using anterior segment optical coherence tomography (AS-OCT) in patients with refractive errors. Patients will be assessed and categorized according to their refractive status, and epithelial thickness measurements will be obtained and analyzed. The study seeks to investigate potential correlations between epithelial thickness distribution and different types of refractive errors to enhance understanding of corneal biomechanics in refractive conditions.

Inclusion criteria

• Age ≥ 18 years-
• Patients diagnosed with myopia or hyperopia by refraction
• Clear cornea with no evidence of corneal pathology
• Ability to undergo reliable anterior segment imaging

Exclusion criteria

• Inability to fixate or follow instructions
• Family history of keratoconus
• Glaucoma,Cataract
• Previous ocular surgery including refractive surgery
• Keratoconus or suspected corneal ectasia
• Corneal opacities or scars
• Contact lens wear within the last two weeks
• Ocular trauma
• systemic disease affecting the cornea ( Such as diabetes)