Abstract :
Background: Cataract surgery with intraocular lens (IOL) implantation is the standard treatment for restoring vision. The choice between hydrophilic and hydrophobic monofocal yellow IOLs may influence postoperative near vision outcomes.Aim and Objectives: To study the efficacy and benefits of hydrophobic yellow IOL over hydrophilic IOL to improve the quality of near vision outcome following cataract surgery by Phacoemulsification.Materials and Methods: In this retrospective study from Vinayaka Mission’s Kirupananda Variyar Medical College and Hospitals, Salem during the time period of January 2024 to June 2024, 100 eyes between 40 -55 years of age were with visually significant uncomplicated cataract were taken and divided into two groups that were evenly distributed . 50 eyes with implantation of hydrophilic monofocal IOL (Acryfold) and the other group of 50 eyes with implantation of hydrophobic monofocal yellow IOL (AcrySof IQ). After complete pre-op evaluation, Phacoemulsification surgery was done by the same surgeon and with the implantation of same company monofocal IOLs under topical anaesthesia with 0.5% proparacaine. Post operatively, both the two groups of patients were examined with the same snellen near vision chart with same illumination, same distance (33cm) and in same refraction room during 1st week, 3rd week and 6th week respectively.Results: There is no difference between the hydrophilic and hydrophobic yellow IOL groups with respect to the dependent variable distant vision at 6th week post operatively. Logistic regression analysis shows that the model as a whole is not significant (Chi square = 2.74, p .254, n = 100). There is a difference between the hydrophilic and hydrophobic yellow IOL groups with respect to the dependent variable of postoperative near vision at 6th week. Logistic regression analysis shows that the model as a whole is significant for near vision (Chi-square = 11.8, p .001, n = 100).Conclusion: The acrylic hydrophobic material with UV?blocking chromophore-yellow lenses are shown to have better visual outcomes due to dual advantage of blocking blue light at bright illumination, as well as allowing blue light in dim illumination which is required for resetting the biological clock and night vision. Thus, it may show improved near vision status after cataract surgery.
Keyword :
Near vision, Monofocal IOL, Hydrophobic yellow IOL, Hydrophilic IOL.