97th DOG Annual Meeting 1999

P154

INDICATIONS FOR AN EXCHANGE OF INTRAOCULAR LENSES - CASE ANALYSIS

R. Bruder, S. Clemens, W. Pedal

Although implanted intraocular lenses are usually tolerated very well there are some cases in which an exchange of implantated lenses has to be performed.

This study was designed to analyse retrospectively the reasons for changing an intraocular lens. We registered all operations involving an exchange of intraocular lenses between 1995 till 1998. Anterior chamber lenses were mainly explanted while posterior chamber lenses were preferebly implanted.

Approximately half of the exchange operations had been combined with a perforating keratoplasty, some cases had been combined with a pars plana vitrectomy. The reason for changing an anterior chamber lens was in over 50% of the cases a bullous keratoplasty. We noticed that a direct contact of the anterior chamber lens with endothelial cell could be found in a very few cases only. Reasons for removing a posterior chamber lens were various reaching from luxation into the vitreous cavity to insufficient refraction after cataract operation.

In this study we could show that a bullous keratoplasty after anterior chamber lens implantation is still the main indication for IOL removal and exchange. For a lens exchange after posterior chamber lens implantation we could show no significant single reason.

Univ.-Augenklinik, Rubenowstr. 2, 17487 Greifswald


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