Quantification Of Posterior Capsular Opacification After Cataract Surgery With Hydrophobic Acrylic Intraocular Lens Sensar AR40e And Silicone Intraocular Lens

Purpose.To evaluate posterior capsular opacification(PCO) with hydrophobic acrylic intraocular lens(IOL,Sensar AR40e) and silicone IOL s after cataract surgery,and use a software program developed to provide an objective assessment of the amount of PCO in digital images of the posterior capsule to quantify PCO . Methods.98 eyes underwent standardised phacoemulsification and "in the bag"IOL placement.They were randomised to receive a three piece lens of hydrophobic acrylic or silicone,but lens materials is different in one case.On days 1,7,30,90 visual acuity and anterior chamber flare were observed ,and years 1 and 2 digitised retroillumination images were taken of the posterior capsule. Images are analyzed by POCO software program , removing the Purkinje light reflexes , contrast enhancement, filtering to enhance low-density PCO.Results.Percentage PCO were in 0.32±0.13 of hydrophobic acrylic IOLs at year1,compared with 0.39±0.17 of silicone(P=0.37).At year 2 percentage PCO were in 0.42±0.20 with hydrophobic acrylic IOLs, 0.34±0.18 with silicone IOLs(P=0.50).Of those patients with PCO at year 1 and year 2 severity grade were 0.50±0.30 and 0.82±0.58 of hydrophobic acrylic cases,compared with 0.63±0.35 and 0.55±0.35 of patients with silicone IOLs(P=0.52, P=0.69). There was no statistically significant association between lens types and visual acuity or lens types and anterior...