Vol. 5, Issue 11 (2019)
A comparative study of blue light filtering intraocular lens with ultraviolet filtering intraocular lens in visual functions
Author(s): Dr. Anand Kumar, Dr. Nahar Singh Choudhary, Dr. CS Vyas
Abstract: Purpose: This prospective study was conducted, to compare visual functions of blue light filtering intraocular lens (IOL) with ultraviolet filtering (UV) intraocular lens. Methods: Fifty patients with senile cataract were randomly assigned to implant blue light filtering IOL or UV filtering IOL. There were 25 patients selected in each, Y group (blue light filter) and A group (UV filtering) for study. The outcome measures were visual acuity for distance (6 meter) and near (33 cm), contrast sensitivity under photopic (85 cd2) conditions with Pelli Robson chart, color vision with Farnsworth-Munsell 100-hue test and patient satisfaction questionnaire. Results: Six months postoperatively, there was no significant difference, between the two groups for distance vision, near vision, color vision, contrast sensitivity and patient satisfaction. As far as only visual functions are concerned both IOLs performed equally well. Conclusions: In this study the blue light filtering (Yellow) IOLs and UV light filtering (Clear) IOLs gave similar outcomes for visual functions. So the blue light filtering IOL didn’t provide any significant advantage over colorless UV filtering IOL, also there is no harm in using blue light filtering IOL. Although longer clinical studies are required, to confirm the Age-related macular degeneration (ARMD) prevention, as claimed by blue light filtering IOLs.