Jan H Pameyer

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A capsulorhexis may be difficult to perform in the absence of a red fundus reflex. Using 0.1 mL of trypan blue 0.1% to stain the anterior capsule in 30 patients with a mature cataract enabled us to visualize the capsulorhexis during phacoemulsification. No adverse reactions were observed up to 12 months after surgery. Trypan blue staining of the anterior(More)
After cataract extraction with implantation of an intraocular lens the increased transmission of ultraviolet and blue light may accelerate the development of age-related macular degeneration by producing free radicals in the retina. The maculae of 82 randomly selected postmortem human pseudophakic eyes and 16 fellow phakic eyes were examined by light(More)
In two pseudophakic human eyes, obtained post mortem, Elschnig's pearls were visible biomicroscopically. One eye contained a medallion lens and the other an iridocapsular lens (implanted for 53 months and 39 months, respectively). The medallion lens was fixed to the iris but was not attached to the Soemmerring's ring. Elschnig's pearls and star-shaped cells(More)
OBJECTIVES To describe the refractive results of cataract surgery after photorefractive keratectomy (PRK) for patients with myopia, and to find a more accurate method to predict intraocular lens (IOL) power in these cases. DESIGN Nonrandomized, retrospective clinical study. PATIENTS AND METHODS Nine patients (15 eyes) who underwent cataract surgery(More)
OBJECTIVE To assess intraocular lens (IOL) power calculations in patients undergoing cataract surgery after excimer laser photorefractive keratectomy (PRK) for myopia. METHODS Four eyes of two patients underwent phacoemulsification with IOL implantation after PRK for myopia. The estimated refractive error that would have been induced had the IOL predicted(More)
We developed an easily reproducible cataract model for training purposes. Using the technique, cataract was induced in postmortem pig eyes after 9 seconds in a microwave oven. With this model, cataract surgery, including phacoemulsification and intraocular lens implantation, can be practiced successfully.
We performed extracapsular lens extraction with implantation of a J-loop posterior chamber lens in 14 rabbit eyes. Postoperatively, the animals were examined by slit lamp. They were killed after varying survival times of up to 12 weeks, and the implants were examined by scanning electron microscopy. Three days after the operation a thin amorphous coating(More)
Scanning electron microscopy of 9 intraocular lenses, removed from patients mainly because of corneal problems, revealed the presence of different types of adhering elements. Independent of clinically significant symptoms of infection, macrophages and/or epitheloid cells and/or granulocytes were observed. On their anterior surface, 3 lenses showed flat(More)
The scanning ultrastructure of the remnants of the lens left in the eye after extracapsular lens extraction was investigated in the rabbit. Extracapsular lens extraction was performed in 25 eyes and the development of after-cataract followed by biomicroscopic examination. After survival times varying between 1 week and 12 months, the eyes were enucleated(More)
Visual acuity and contrast sensitivity after cataract surgery were evaluated in best-case eyes that received a Storz bifocal zonal intraocular lens (IOL) or a 3M diffractive multifocal IOL. A group of eyes with a monofocal IOL was used as a control. Postoperatively, all eyes had a best corrected visual acuity of 20/40 or better. At near, wearing the best(More)