Security of capsular fixation: Smallversus large-hole plate-haptic lenses

Abstract

Proliferation of lens epithelial cells through a large positioning hole in a plate-haptic silicone IOL may improve the long-term security of capsular bag fixation. This will help reduce the incidence of IOL decentration and dislocation.

Comparative evaluation of plate haptic lenses with smaller and larger positioning holes

“…Our study highlights the fact that the decentring and dislocation of plate haptics is much lower if larger positioning holes are used. The enhanced capsular bag fixation occurs because lens epithelial cells and/or fibrous tissue grow through the 1.15 mm fenestrations and secure the IOL 12 . This finding corroborates the work of Mammalis et al who showed that, in rabbit eyes, a significantly greater force is required to remove the larger hole lenses from the capsular bag than to remove the smaller hole lenses 13 …”

Hydrophobic acrylic and plate-haptic silicone intraocular lens implantation in diabetic patients

“…9 Plate-haptic silicone and hydrophobic acrylic are 2 commonly used types of IOLs, differing in material and design. Some studies of plate-haptic silicone IOLs have established favorable long-term results 10,11 and suggested a lower PCO rate than that with 3-piece silicone IOLs. 12,13 Also, although a lower PCO rate has been established with hydrophobic acrylic IOLs than with poly(methyl methacrylate) (PMMA) and 3-piece silicone IOLs, 1,3 some studies have reported a greater inflammatory response and blood-aqueous barrier breakdown after implantation of hydrophobic acrylic IOLs than after implantation of silicone IOLs.…”