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Biomedical subjects

J Ciszewska

Publications and source records attributed to J Ciszewska.

12 recordsLinked to original sources
PubMed1996

[Chemical analysis of compounds released after damage of the intraocular lens with the Nd: YAG laser].

PURPOSE: To evaluate the amount of releasing chemical compounds after laser Nd: YAG damage of PMMA intraocular lenses. MATERIAL AND METHOD: The study was undertaken in vitro condition. In two chemical vials filled with aqua humor-like solution 7 intraocular lenses in each were installed. One vial was the control group. 500 exposures to the laser Nd: YAG were performed focusing the beam on intraocular lenses in second vial. The aqua humor-like solution was analysed by gas chromatography in period of 1, 5 and 10 weeks. RESULTS: Methylmethacrylate was present in vial with damaged intraocular lenses in the first week after laser exposition, the other chemical compounds were observed after this period. CONCLUSIONS: 1. Laser Nd: YAG provokes depolymerisation of PMMA to methylmethacrylate just in time when damaging factor occurs. 2. Methyl alcohol and formaldehyde present in a longer time after damage of PMMA are the products of methylmethacrylate reactions. 3. The amount of released chemical compounds is so small and seems not to have the toxic properties.

In Vitro Techniques↗
PubMed1993

[Usefulness of a gel with a new composition for gonioscopy and laser microsurgery].

A newly composed gel was examined with a view of determining its usefulness for gonioscopy and laser microsurgery. It was found, that it did not exert any adverse effect on ocular tissue, it displayed perfect transparency and proper consistency facilitating manual operation. Experimental procedures confirmed its clinical usefulness.

Gels↗
PubMed1993

[Visual function in pseudophakia].

Visual function of 33 pseudophakic eyes of 28 persons were examined and compared with control group of 27 persons without any changes in visual system. In pseudophakia there was a distinct decrease of mesopic vision and increased glare sensitivity. Color vision was not significant affected. The authors consider that only few professional drivers, engine drivers and pilots with pseudophakia would be able to get positive evaluation of visual function for further usefulness in their profession.

Adolescent↗
PubMed1991

[Mixed tumor of the lacrimal gland].

Presented is a case of a woman-patient with a mixed tumor of the lacrimal gland which grew to an infrequently seen size. The tumor was excised and identified as a non-malignant one. Three years after surgery came a renewed extensive expansion of the tumor. Exenteration of the orbit was performed and histopathological examination revealed a mixed malignant tumor of the gland.

Female↗
PubMed1991

[Filtration angles in pseudophakic eyes].

Examination of the filtration angle comprised 86 eyes with implanted artificial intraocular lenses in the 8th postoperative month. The evaluation detected in both groups the appearance of pigmentary deposits in the trabecular area, of circumferential anterior synechiae and of vascular proliferation of the circumference of the iris. In some patients with anterior chamber lenses were observed abnormalities in the position of the implant.

Adolescent↗
PubMed1991

[Visual acuity and refraction in pseudophakia].

Visual acuity with correction was checked in 86 persons with anterior and posterior chamber lenses in various postoperative periods. In the majority of examines of both groups in the late postoperative period the visual acuity was correct. The results obtained in both groups of patients were compared. The causes of astigmatism detected in some cases were considered.

Adult↗
PubMed1991

[Intraocular pressure in pseudophakic eyes].

The IOP was checked in 86 eyes with implanted intraocular lenses in various postoperative periods. There was no essential difference in the behaviour of the IOP in persons with anterior or posterior chamber lenses. Causes of secondary glaucoma appearing in some cases were considered.

Adolescent↗
PubMed1991

[Pemphigoid as a cause of marked impairment of visual acuity].

Among 11 patients aged 9-79 years with diagnosed pemphigoid 5 were men and 6 women. Three persons exhibited only some conjunctival irritation and conjunctival adhesions, the remaining 8--besides some shallowness of the fornices--showed also corneal changes. Six patients showed signs of the dry-eye syndrome and 3--symptoms of secondary glaucoma. General treatment (Avlosulfon, encorton) was applied in 8 patients.

Adolescent↗
PubMed1991

[Use of the Miragel acrylate sponge in severe eye burns caused by lime].

One of complications of burns of the eye caused by lime are the conjunctival adhesions. Presented are 2 patients who were treated by strips of Miragel acrylate sponge implanted temporarily into the conjunctival sac. After 1 year of observation and removal of the implants the conjunctival sac showed to be free of adhesions with a free motility of the eye.

Adult↗
PubMed1990

[Visual evoked potentials in pseudophakia].

Examinations of VEP were performed in 32 cases of pseudophakia (20 implants to the anterior, 12 to the posterior chamber). The impulses were light flashes and a reversible checkboard pattern. Normal records of VEP were obtained in 93 p.c. of cases with the use of a light flash and in 75 p.c. by applying a checkboard pattern. No correlation was found between the visual acuity and the VEP. The authors observed a shortening of the latency time of the N2 bend after implantation of the lens using the light flashes.

Adult↗