Abstract

Research Article

Changes in intraocular pressure after ND-yag laser posterior capsulotomy

Hashim Thiab Hassan*

Published: 20 May, 2020 | Volume 4 - Issue 2 | Pages: 021-030

The Nd-Yag L has been developed in Europe since the mid-1970s [10]. Today Nd-Yag LPC has become an established procedure for after cataract. Before the Nd-Yag L came into use, the capsulotomy was done by performing a small puncture with a needle knife or 27 gauge needle, either at the time of original operation or as a secondary procedure through the limbus in aphakic or through pars plana in pseudophakic. The Nd-Yag L preferred because it is non-invasive and infection cannot occur. The most important complication is a transient rise in IOP 1-3 hrs of Nd-Yag LPC [1]. Occasionally the pressure rise is high and can cause serious damage to the optic nerve, so that the IOP should be monitored and appropriate measures should be taken if necessary. Only if we can minimize its frequency or, better still, avoid it, altogether, can we accept Nd-Yag L as a safe procedure in our effort to restore vision. In otherwise normal eyes, a mild elevation of IOP is of no consequence because it usually resolves within 24 hour especially when the patient receives anti-glaucoma drugs before and after laser application. However in eyes with pre-existing glaucoma, the incidence of IOP elevation is higher and its duration is longer than in otherwise normal eyes. Some glaucomatous eyes may therefore require additional glaucoma therapy for several weeks following Nd-Yag LPC [3]. So monitoring is particularly important in the cases of glaucoma with optic nerve damage and field loss as these eyes are susceptible to small pressure rises for even a short period. A single rise to 40mmHg for a few hours can cause irreversible damage to the damaged optic nerve and lead to permanent visual loss or even blindness [1]. The purpose of this study is to evaluate the changes in IOP at 1hour,24hour and 1 week after Nd-Yag LPC.

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Keywords:

Cystoid macular edema (CME). Continuous wave (CW); Extra-capsular cataract extraction (ECCE); Intraocular lens (IOL); Intraocular pressure (IOP); Infrared (IR); Laser posterior capsulotomy (LPC); Millijoule (MJ); Micrometer (Mm); Millimeter (mm); Millimeter mercury (mmHg); Neodymium-yttrium-aluminum-garnet laser (Nd-Yag L); Number (No.). Nanometer (nm); Posterior capsule (PC); Posterior capsule opacification (PCO); Retinal detachment (RD); Standard of deviation (SD); Ultraviolet (UV)

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