Capsule complication during cataract surgery: Case-control study of preoperative and intraoperative risk factors: Swedish Capsule Rupture Study Group report 2.

Purpose: To identify preoperative and intraoperative factors associated with a capsule complication; that is, a capsule tear or a zonular dehiscence during cataract surgery.

Setting: Ten ophthalmic surgery departments in Sweden.

Methods: A retrospective review of files of patients with a capsule complication and control patients with no complication operated on in 2003 was performed.

Evaluation of aqueous outflow facility in patients with high intraocular pressure after cataract surgery.

Background And Objective: To study whether patients with a marked elevation of intraocular pressure (IOP) the day after cataract surgery may have a chronically impaired aqueous outflow.

Patients And Methods: In 128 consecutive patients, IOP was measured both preoperatively and the day after phacoemulsification and intraocular lens implantation. In the late postoperative period, aqueous outflow facility (C-value) was measured with pneumatonography in patients (n = 7) who experienced a postoperative IOP increase of at least 20 mm Hg and in patients (n = 11) with a difference between preoperative and postoperative IOP of not more than 2 mm Hg.

Clinical application of the lens haptic plane concept with transformed axial lengths.

Purpose: To clinically evaluate the lens haptic plane (LHP) concept in combination with thick-lens ray tracing for intraocular lens (IOL) power calculation.

Setting: St. Erik's Eye Hospital, Stockholm, Sweden.

Reduction of trend errors in power calculation by linear transformation of measured axial lengths.

Purpose: To find a method to improve the refractive outcome in short eyes and long eyes without sacrificing the outcome in normal eyes.

Setting: St. Erik's Eye Hospital, Stockholm, Sweden.

Comparison of 2 A-scans.

Purpose: To compare 2 A-scan instruments with regard to differences in measured results for the same patient sample.

Setting: St. Erik's Eye Hospital, Stockholm, Sweden.

Anterior chamber depth measurement: a-scan versus optical methods.

Purpose: To evaluate methods of measuring anterior chamber depth (ACD) before and after cataract surgery.

Setting: St. Erik's Eye Hospital, Stockholm, Sweden.

A superficial corneal lesion of unknown origin.

Three patients are described showing corneal changes of unknown origin previously not described. The changes consist of discrete opacities mostly located in the epithelium of the cornea. The opacities are arranged in a continuous are originating from the limbus with the vertex extending towards the optic zone.

Heparin surface modified intraocular lenses--a one-year follow-up of a safety study.

PMMA intraocular lenses have been modified by bonding a monolayer of Heparin molecules to the surface. These Heparin surface modified (HSM) IOLs were implanted in the capsular bag after extracapsular cataract extraction. Sixty-six patients were followed for 12 months in an open safety study.

Improved biocompatibility of intraocular lenses by heparin surface modification: a 12-month implantation study in monkeys.

To evaluate the long-term biocompatibility and potential side effects of heparin surface modification of a poly(methyl methacrylate) intraocular lens (IOL), a heparin surface modified IOL was implanted in the left posterior chamber of 24 cynomolgus monkeys and a reference IOL (without surface modification) was implanted in the right eye in 12 of these animals. Twelve eyes were not operated on. Eleven eyes in seven monkeys were lens extracted as a control of the surgical method.

Subcapsular zones of discontinuity in the human lens.

Zones of discontinuity parallel to the lens surface can be seen in the normal lens on slitlamp examination. These zones have been suggested to be surfaces at which the refractive index changes from one value to another. Normal lenses from tumor eyes have been examined by quantitative microradiography.

Heparin surface modified intraocular lenses implanted in the monkey eye.

The biocompatibility of heparin surface modified poly(methyl methacrylate) intraocular lenses (IOLs) was evaluated in two experiments following implantation in the anterior and posterior eye chambers of adult cynomolgus monkeys. Throughout the study, large inflammatory cells and prominent pigment deposits were seen on the unmodified lenses, whereas the heparin surface modified IOLs remained almost free of precipitates. Similarly, fewer posterior synechias were observed in eyes implanted with surface modified IOLs in the posterior chamber than in eyes implanted with control lenses.

Infrared radiation and cataract. III. Differences between the two eyes of glass workers.

In an epidemiologic investigation of the eyes of 209 glass workers with occupational exposure to infrared (IR) radiation and 298 non-IR-exposed controls, the two eyes were compared regarding the degree of lens opacities. The left eye was found to be the most affected in a significantly larger number of persons than the right in IR-exposed workers. The exposure to the two eyes was measured with a system of two pyroelectric radiometers monted in a face mask.

Infrared radiation and cataract II. Epidemiologic investigation of glass workers.

An epidemiologic investigation on the prevalence of cataract in glass workers is presented. The study includes 209 workers over 50 years of age exposed to infrared (IR) radiation in the Swedish manual glass industry for 20 years or more, and 298 non-IR-exposed controls. The examination includes an evaluation of the individual IR-exposure and an ophthalmological examination with special reference to the lens.

Infrared radiation and cataract. I. Epidemiologic investigation of iron- and steel-workers.

The aim of the presented study was to establish if occupational exposure to infrared (IR) radiation increases the risk of developing cataract, and to correlate the lens findings to the degree of exposure. The eyes of 208 IR-exposed workers and 208 controls, all from 6 Swedish iron and steel manufacturing plants, were examined. An increased prevalence of wedge-shaped opacities was found in IR-exposed persons 60 years of age and older.

Ocular exposure to infrared radiation in the Swedish iron and steel industry.

This study was carried out to determine the level of potentially off-damaging infrared (IR) radiation in the iron and steel industry. Determinations of IR radiation were made in different positions in many types of processes. Forging was found to give the highest radiant exposure to the eyes, while workers in electrosteel mills are considerably less exposed.

Infrared radiation and cataract.

The study was undertaken to determine if occupational exposure to infrared (IR) radiation increases the risk of developing cataract. The study includes epidemiologic investigations of two groups of workers exposed to IR radiation and two groups of non IR-exposed controls. The first investigation included 208 iron and steel workers and 208 controls.

Ophthalmological study of patients undergoing long-term PUVA therapy.

In the present study 46 patients with severe psoriasis maintained on long-term PUVA therapy have been followed up to 6 1/2 years after the initiation of treatment. Repeated ophthalmological examinations were performed in order to detect any early sign of lens changes. No ocular side effects attributed to the photochemotherapy were revealed during this period.

Exposure to organic solvents. A cross-sectional epidemiologic investigation on occupationally exposed care and industrial spray painters with special reference to the nervous system.

In the present epidemiologic study 80 car or industrial spray painters with long-term low level exposure to organic solvents were examined and compared with two matched reference groups of nonexposed industrial workers (80 persons in each group). The aim of the study was to investigate the possible effects of the solvent exposure on health. The investigation included psychiatric interviews, psychometric tests, neurological, neurophysiological and ophthalmologic examinations, and computed tomography of the brain.