Josef Wollensak

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To evaluate the efficacy, predictability, and stability of myopic photorefractive keratectomy (PRK), the authors completed a 1-year follow-up study on a consecutive series of 26 sighted eyes undergoing this procedure. The results of this follow-up are presented. In addition, side effects and complications in another 255 sighted eyes with a follow-up of 3(More)
A theoretical model is presented that is able to explain for the first time the pressure drop across the trabecular meshwork. The ramified flow paths in the subendothelial region of the trabecular meshwork can be interpreted as a filter bed. Data from transmission electron microscope (TEM) photographs are the starting point of the theoretical consideration.(More)
Ciliary block (malignant) glaucoma is a rare complication of cataract surgery. In eyes with narrow angles and acute glaucoma, ciliary block must be differentiated from pupillary block to provide appropriate therapy. We review two cases of ciliary block glaucoma following uncomplicated extracapsular cataract extraction with posterior chamber lens(More)
PURPOSE To compare a Pharmacia diffractive bifocal intraocular lens (IOL) with a monofocal lens of the same design without the diffractive grating. SETTING Multicenter study. METHODS This randomized, prospective study comprised 70 patients with a monofocal IOL and 79 with a diffractive bifocal IOL. Follow-up was 5 to 6 months. Near and distance visual(More)
OBJECTIVE To evaluate prospectively a diffractive (811E, Pharmacia; power add +4.0 D) versus a refractive (PA154N, Allergan; power add +3.5 D) designed multifocal lens. PARTICIPANTS Eighty patients planned for cataract surgery without additional ocular pathologies were randomized into the diffractive or refractive group, respectively. INTERVENTION A(More)
PURPOSE To compare contrast sensitivity (CS) after implantation of a diffractive bifocal intraocular lens (IOL) and a monofocal IOL of similar design. SETTING Seven European centers. METHODS In this randomized, prospective study, CS was tested 5 months after cataract and IOL implantation surgery in 115 patients with a diffractive bifocal IOL and 106(More)
  • J Wollensak
  • 1976
One patient with persistent hypotony after cyclodialysis and another one after contusion of the eyeball with recessed angle and traumatic cyclodialysis were successfully treated as follows: Blood plasma of the patient is injected in the anterior chamber and fibrinogen is transformed into fibrin by recalcification. Both patients attained normal intraocular(More)
Intumescent cataractous lenses were investigated as to their water content and protein composition. Nuclei were separated from cortices. Water-soluble, water-insoluble, urea-soluble and urea-insoluble portions were quantified and the subunit composition of the water-soluble crystallin fraction was looked at on SDS-gel electrophoresis. Compared to normal(More)
BACKGROUND The first 26 patients who underwent photorefractive keratectomy with an excimer laser in our clinic with a 1-year follow up voluntarily answered a questionnaire. METHODS It was intended to get information about their social status, motivation, expectations, and satisfaction with myopic excimer laser photorefractive keratectomy. RESULTS All(More)
UV radiation is known to cause actinic damage to the DNA. Excimer laser light, possibly used for keratorefractive surgery, should not produce this damage, as the penetration depth is far less than the diameter of a cell. However, photoreactivation experiments with yeast cells show a significant amount of DNA repair after excimer irradiation. The zone of(More)