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J M Graether

Publications and source records attributed to J M Graether.

4 recordsLinked to original sources
PubMed1996

Graether pupil expander for managing the small pupil during surgery.

The Graether pupil expander, a device for mechanically dilating the pupil, is a soft silicone ring grooved to engage the iris sphincter and maintain pupil dilation during cataract surgery and intraocular lens implantation. The ring is incomplete; the gap is bridged by a slender strap that provides access to the pupil aperture. The pupil expander will be preloaded on a disposable insertion tool that permits the expander to be inserted through the primary surgical incision. Stretching the pupil and placing the pupil expander is facilitated by an iris glide-retractor that fixates the iris sphincter at the incision prior to insertion of the pupil expander. Clinical experience with over 100 cases is briefly discussed.

Cataract Extraction↗
PubMed1983

A comparison of the effects of phacoemulsification and nucleus expression on endothelial cell density.

A series of patients undergoing extracapsular cataract extraction by phacoemulsification (1,126) or nucleus expression (632) were studied to evaluate the relative effects of emulsification time, irrigating volume, and surgical technique on endothelial cell density. The collective data revealed a higher cell loss with phacoemulsification (15%) than with nucleus expression (12%). Patients over 69.5 years appeared to be more vulnerable to the effects of phacoemulsification than those below 69.5 years. Although the data were subjected to combinations and permutations of age, sex, time, and volume, no direct correlation between emulsification time and/or irrigating volume and endothelial cell loss was shown. When data sets for individual surgeons were analyzed, the most striking difference was between the endothelial effect of anterior chamber phacoemulsification (26% average reduction) and that of posterior chamber phacoemulsification (13% average reduction).

Age Factors↗
PubMed1981

The effects of a penetrating metallic foreign body on a pseudophakic eye.

The penetration of a pseudophakic eye by a high-speed metallic foreign body is reported. The path of the steel missile was interrupted by the intraocular lens, which was fixed within the capsular remnant, preventing missile penetration into the posterior segment. Although the foreign body was removed from the anterior chamber without immediate sequelae, several months later a peripheral retinal detachment occurred. Prompt recognition and treatment resulted in the retention of excellent pseudophakic vision. The importance of postoperative protective eyewear is emphasized.

Aged↗