CONTRAST SENSITIVITY CHANGES AFTER LASIK AND PHAKIC IOLS IN MODERATE TO HIGH MYOPIA
Journal Title: European Journal of Pharmaceutical and Medical Research - Year 2018, Vol 5, Issue 4
Abstract
Background: LASIK; a laser in situ keratomileusis is one of the most frequently performed ophthalmic procedures world-wide. The aim of the present study is To compare the postoperative contrast sensitivity function between LASIK, posterior chamber phakic IOL (ICL) and iris-fixated anterior chamber phakic IOL (phakic Iris Claw) surgeries in moderate to high myopic eyes. Methods: A prospective randomized comparative study on 37 patients (60 eyes) with moderate to high myopia. The patients were divided into 3 groups: Group A; included twenty eyes of fifteen patients that underwent LASIK. Minimum corneal thickness is 500 μm. Group B: included twenty eyes of eleven patients underwent ICL implantation, horizontal White to white diameter is 11mm or more. Group C: included twenty eyes of eleven patients underwent phakic Iris Claw implantation, anterior chamber depth (ACD) 2.8 or more. Assessment of visual acuity (uncorrected and best corrected) and contrast sensitivity function using Vistech contrast sensitivity chart were done for all groups preoperatively and after one month and three months postoperatively. Results: After one month postoperatively the VA both UCVA and BCVA were greatly improved with correction of refraction in all groups. The contrast sensitivity functions significantly improved at all spatial frequencies (1.5, 3, 6, 12, and18 cycle per degree [c/d]) in phakic Iris Claw group. It improved in ICL group but did not reach significant levels. LASIK group showed contrast sensitivity improvement at (1.5, 3, 6 and 12c/d) that reach significant value at (3&12 c/d) slight depression was observed at spatial frequency 18 c/d. After three months postoperatively, more improvement in CS thresholds were found in all surgery groups. The LASIK group showed normalization of CS threshold at spatial frequency18 c/d. Conclusion: the study affirms the better contrast results after refractive surgery. Three months after LASIK, ICL and iris claw surgeries are enough time for recovery of contrast sensitivity. Phakic iris claw and ICL are valuable surgical correction especially with high refractive errors.
Authors and Affiliations
Dr. Takadom Ahmed Ibrahim
Keywords
Related Articles
- EP ID EP637208
- DOI -
- Views 147
- Downloads 0
THE EFFECT OF ANTIOXIDANT ACTIVITY, CYTOTOXICITY, AND INFLAMMATORY CYTOKINE PRODUCTION OF ELEVEN ESSENTIAL OILS
Essential oils are complex mixtures of several components endowed with a wide range of biological activities. The objectives of this study were to chemically characterize and evaluate the antioxidant activity, cytotoxici...
THEOBROMA CACAO STEM BARK AMELIORATES DOXORUBICIN-INDUCED OXIDATIVE STRESS, TESTICULAR AND LUNGS DAMAGE IN EXPERIMENTAL RATS
Doxorubicin (DOX), a chemotherapy drug, is used to treat different types of cancer but its clinical use has been limited by dose-dependent multi-organ toxicities especially to the lungs, testes, heart and liver. Eighty r...
AN ASSESSMENT OF QUALITY OF LIFE IN LIBYAN PATIENTS UNDERGOING HEMODIALYSIS
Background: In patients with end-stage renal disease, the need for renal replacement therapy to prolong life represents the final stage of living. Quality of life is one of the concepts that was accepted as a criterion f...
IMMUNOLOGICAL PROFILE (GAD, ICA, INSULIN RECEPTOR ANTIBODIES) IN TYPE Ι DM PATIENTS, OUR EXPERIENCE AT KHMC
Objective: The aim of this study was to determine the frequency of autoantibodies among Jordanian patients with diabetes mellitustype 1. Methods:A total of 128 subjects were included with age range between 1year and 14 y...
ACASE OF BENIGN MESOTHELIAL CYST PRESENTED BY EXUDATIVE ASCITES, CASE REPORT SERIES
Benign cystic mesothelioma (BCM) is a rare neoplasm of the peritoneum, con -sisting of solitary or multiple cysts coming from mesothelial cells. It is a rare intra abdominal tumor occurring predominantly in women of repr...