Journal - American Intra-Ocular Implant Society最新文献

The efficacy of the Terry quantitative surgical keratometer in minimizing early postoperative astigmatism was evaluated in a retrospective study. Intraoperative use of the Terry keratometer reduced the keratometric corneal astigmatism in the early postoperative period for the 6.5-mm chord length phacoemulsification-lens implant incision as well as for the 10.0-mm to 11.0-mm chord length planned extracapsular cataract extraction-lens implant incision. In addition, the 6.5-mm chord length incision yielded a significant reduction in early postoperative astigmatism when compared to the 10.0-mm to 11.0-mm chord length incision. Furthermore, there was a reduction in the number of patients who required suture cutting in the keratometer group. The Terry quantitative surgical keratometer is a useful tool for reducing early postoperative surgical astigmatism and decreases the number of patients who require suture cutting.

The effect of pupil size on ultrasonically determined anterior-chamber depth was studied in vitro with the Storz Alpha 20/20 and with the Kretz ultrasonoscope at high and low system sensitivity. The traces were measured peak to peak and base to base; results were compared to anterior-chamber depth measurements with optical pachymetry. We conclude that when measuring anterior-chamber depth with ultrasound, the pupil must be fully dilated or reduced system sensitivity must be used and the traces measured peak to peak.

One year after a successful extracapsular cataract extraction with posterior chamber lens implantation of a Cilco Kratz modified J-loop lens, the patient, a 79-year-old white female, developed a severe granulomatous uveitis unresponsive to topical or systemic steroid therapy. All usual uveitis tests were negative, and no evidence of masquerade-syndrome-type uveitis was found. The possibility of lens-induced uveitis was considered. A B-scan ultrasound revealed high density echoes in the superotemporal portion of the capsular bag, and an operative procedure consisting of a sector iridectomy, removal of the implant, removal of white cortical material in the capsular bag as well as residual lens capsule, and an anterior vitrectomy was done. Pathologic examination of the specimens revealed lens material engulfed by large macrophages, foam cells, and plasma cells. The patient's uveitis rapidly subsided. She is now off all medication and has normal aphakic vision. The differential diagnosis, surgical management, and implications of this problem are discussed.

Aphakic and pseudophakic corneal edema have become the primary indication for corneal transplantation. At the time of this surgery, implantation of an intraocular lens (IOL) may be considered. We describe our technique for inserting a flexible anterior chamber IOL during keratoplasty to avoid any damage to intraocular structures.

We studied the intraocular pressure (IOP) following extracapsular cataract extraction and posterior chamber lens implantation in 75 cases. Sodium hyaluronate (Healone) was used in all cases. In 40 cases, Healon® was left in the eyes; in 35, the eyes were irrigated to remove Healon® from the anterior chamber. When Healon® was left in the eyes, 35% had an IOP increase of ≥20 mm Hg during the initial ten hours, compared to 11% of the group in which Healon® was irrigated out. Twenty hours after surgery, the irrigated eyes had an average lower IOP than the nonirrigated eyes, 15.6 mm Hg versus 23.8 mm Hg.