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Biomedical subjects

M Gerkowicz

Publications and source records attributed to M Gerkowicz.

At least 19 recordsLinked to original sources
PubMed1997

[Evaluation of some vision components after implantation of bifocal and monocular intraocular lenses].

Short and long distance vision as well as vision in twilight conditions and dazzle sensitivity in 2 groups of 30 persons have been compared. In one group Corneal-Dual bifocal intraocular lenses and in the other group monocular lenses were implanted. In the former group 0.75 or nearer vision acuity was obtained without any additional correction, while in the latter group obtention of such vision required additional correction to +/- +2 4.0 D sph. Vision in twilight conditions and dazzle sensitivity were similar in both groups, though clearly lower than normal. The study also presents indications and contraindications for implantation of bifocal lenses.

Adult↗
PubMed1996

[Vision defects in two age groups of drivers who caused road accidents].

The aim of the paper is a comparison of sight defects observed in two age groups of drivers who caused severe road accidents. The study material comprised 326 drivers from the district of Lublin who were divided into two groups. The first group consisted of drivers of 50 and under 50 years of age while the second one comprised drivers over 50 years of age. In the first group sight defects were found in 28% of examined subjects and the second in 83.9%. The category of driving licence was changed because of detected sight defects in 7% of drivers from the first group and in 41% of drivers from the second group. The authors point to the necessity of periodical examinations of older drivers and to the need for informing drivers about symptoms of aging of the sight organ.

Accidents, Traffic↗
PubMed1995

[Quantitative assessment of blood-aqueous humor barrier permeability using densitometry methods combined with high performance thin layer chromatography].

The paper presents an original method of examining blood-aqueous humor permeability. The examinations were performed on grey rabbits that had been intravenously injected 10% fluorescein solution. Subsequently, at definite time intervals from the moment of the administration, fluid of the anterior chamber was taken in which the amount of aqueous fluorescein permeating to aqueous humor was measured. The measurements were performed using the method of high potency thin layer chromatography (HPTLC) in DS type chambers. Examination results were presented as densitometry, and the area of individual points was counted using a computer programme. This method yielded a diagram quantitatively presenting fluorescein permeation from the blood to the aqueous humor.

Animals↗
PubMed1991

[Studies of the changes in crystalline lens transparency in rabbits with experimental cataract].

Changes of the transparency of lenses were checked by means of in vivo spectrophotometry of the eye ball and by light transmission through extracted lenses in the course of experimental early cataract in rabbits caused by naphthalen. The results of investigations show that changes of lens transparency evaluated by means of in vivo spectrophotometry of the eye appear earlier than the clinically seen opacity. It speaks for the advisability of undertaking of further studies on the possibility of utilizing this method for detection of precataractous conditions in humans.

Absorption↗
PubMed1991

[Studies of the changes in crystalline lens transparency in subjects at risk of developing cataract].

The aim of the survey was a comparison of transparency of the lenses examined by means of in vivo spectrophotometry of the eye in metalurgists threatened by development of cataract--with the results obtained in persons not engaged in metalurgy and selected by chance from the population. The investigations showed that the transparency of the lenses was lower in the group of the metalurgists than in the control group in spite of the fact that the ophthalmological examination did not detect any lens changes. The results of this study show that the in vivo spectrophotometry may find some employment for detection of changes in the lens which may occur in persons threatened by development of cataract.

Adult↗
PubMed1991

[Experimental studies of retinal ultrastructure after administration of highly fluorinated alkane into the vitreous body].

In experimental investigations the hydrogen-fluoroalkane was introduced into the rabbit vitreous and subsequently the retina was examined in the electron microscope. The observations were carried out in 1, 4 and 8 weeks after introduction of the compound. It was demonstrated that the fluoroalkane penetrated into the internal retinal layers. These layers showed the presence of macrophages, the cytoplasm of which indicated the absorption of the compound. The structure of the retina was preserved till the end of the observation. The compound did not exert any toxic action.

Alkanes↗
PubMed1990

[Surgical procedure for difficult resorption of hemorrhage in the anterior eye chamber].

A method of removing of blood from the anterior chamber by means of the hyaluronic acid is presented. The application of the natrium hyaluronate is raising the safety of operation as well as acts as means of protection against the appearance of intra- and postoperative complications such as secondary haemorrhages, hypotonia of the eyes or adhesions in the anterior chamber.

Adult↗