Biomedical subjects
Publications and source records attributed to P Wyzinski.
As the result of miscalculation of the intraocular lens before cataract surgery, hyperopia and anisometropia developed in a 67-year-old woman. Hexagonal keratotomy performed 7 years later under topical anesthesia with a 5-mm marker resulted in a myopic shift of 4.37 dioptres and an uncorrected visual acuity of 20/25.
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Monocular diplopia secondary to radial keratotomy was investigated in a 42-year-old ophthalmologist. Under certain conditions, the patient observed a ghost image, loss of contrast, and variability in the subjective refraction. The objective findings were scissoring of the retinoscopic reflex, a prominent iron line, and localized flattening of the cornea.
A single patient was refracted 1000 times at all hours of the day in the year after bilateral radial keratotomy (RK). Preoperatively, there was practically no diurnal variation of refraction. Postoperatively, the refraction showed a myopic shift of several diopters from early morning to late evening. Transient hyperopia was superimposed on this diurnal cycle of refraction, peaking two weeks postoperatively, and a smaller long-term hyperopic shift was evident 1 year postoperatively.
A 38-year-old ophthalmologist describes his thoughts and perceptions before, during, and for 12 months after bilateral radial keratotomy. Three kinds of visual fluctuations were experienced. Adaptation to monovision was good.
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A 60-year-old man experienced a sudden painless decrease in visual acuity in his right eye. An examination disclosed a 2.8-mm mass attached to the iris collarette in each eye. Investigation showed a 10-mm mass in the inferior pole of the left kidney. The iris nodules and the affected kidney were removed. Although the patient died of cerebral metastases three months after surgery, the iris masses did not recur, the patient's discomfort was minimal, and his visual acuity remained normal.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.