Thesis & Dissertations

Intraocular surgery commonly results in endothelial damage. During cataract surgery, contact of the endothelium with jets of irrigation fluid and viscoelastic substances, nucleus particles, and instruments or intraocular lenses all cause focal endothelial cell death.The greater retention of Viscoat® in the anterior chamber during phacoemulsification coupled with its superior coating properties results in excellent protection of the corneal endothelium from traumatic injury during the surgical procedure.For foldable IOL implantation, a deep, stable anterior chamber is as crucial as posterior capsule extension. The OVD should be easily removed after implantation, which is more easily achieved with cohesive viscoelastics. For implantation of a foldable IOL, the ideal OVD is very viscous and elastic in medium to low shear rates.12Soft shell technique uses dispersive and cohesive ophthalmic viscosurgical devices (OVDs) sequentially to benefit from their advantages and minimize their drawbacks. The two OVDs are injected one at a time to occupy adjacent spaces; they shouldn’t be mixed.16The aim of the work was to compare between the protective effect of using a cohesive viscoelastic (Sodium Hyaluronate) & a combination of an adhesive with a cohesive viscoelastic (soft shell technique) on the corneal endothelium using non contact specular microscopy Topcon (SP-2000P)...