Pattern of increase in Spherical Aberration and Coma After Femtosecond Laser Assisted In-Situ Keratomileusis Using an Aspheric Ablation Profile
Journal Title: Journal of Ophthalmology and Advance Research - Year 2023, Vol 4, Issue 1
Abstract
Purpose: To determine the contribution of spherical aberration and coma to the total ocular high order aberration before and after femto laser-assisted in-situ keratomileusis using an aspheric ablation profile. Methods: This is a prospective interventional study that was conducted on 34 eyes of 17 patients in the interval between January 2021 and June 2021. Patients did a preoperative aberrometry and corneal tomography. They underwent FS-LASIK surgery using an aspheric ablation profile. The total ocular aberrometry and corneal tomography were repeated one month postoperatively. Results: The mean preoperative contribution of coma to total ocular HOA was 52.16 % with SD of ± 25.59% which declined to 49.48 % with SD of ± 22.53 % postoperatively. The mean preoperative contribution of SA to total ocular HOA was 38.91 % with SD of ± 15.35 % which increased significantly to 51.25 % with SD of ± 16.55 % postoperatively. Conclusion: Post-operative contribution of corneal spherical aberrations to total ocular HOA showed a statistically significant increase compared to pre-operative. However, there was no significant change in coma contribution.
Authors and Affiliations
Mohamed Hosny, Paula Sameh, Sarah Azzam
Keywords
Related Articles
- EP ID EP714513
- DOI https://doi.org/10.46889/JOAR.2023.4105
- Views 55
- Downloads 0
Complications of Delayed Tube Removal after Dacryocystorhinostomy Surgery in the COVID Era
Purpose: A silicon stent intubation, done after Dacryocystorhinostomy (DCR) surgery, is generally removed after 6 weeks. However COVID-19 related lockdown as well as recommendation to hold the lacrimal procedures for s...
Diabetic Mononeuritis: Isolated Extrinsic Paralysis of the III
Oculomotor paralysis is a rare complication of diabetes. It is a rare form of diabetic neuropathy, with a prevalence of 1 to 14% in diabetics. This is a 52-year-old patient with no known personal history, who presented h...
Communication between the Eye Care Practitioner and Parents of the Myopic Child
This article is based on a poster presented at the International Myopia Conference which took place in Rotterdam, Holland in August 2022. The poster and the article were both self-funded. Due to lack of space on the post...
COVID-19 Publication and the Future of Research
It has been more than 1 year since the COVID-19 pandemic despite the advance in medicine and healthcare, human appears small in front of the frequent emerging infectious diseases in recent decades [1]. These are partly...
Correlation Between Contrast Variability and Refractive Error
Background: Contrast sensitivity, is defined as the ability to detect the lowest lumination difference between an object and the background. It is one of the main requisites for good quality vision as the eye works by pe...