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Biomedical subjects

T Kecik

Publications and source records attributed to T Kecik.

At least 19 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↗
PubMed1996

[Acute ocular symptoms in Stevens-Johnson Syndrome].

A case of a 38-year-old man with acute ocular manifestation and severe dermatological lesions of Stevens-Johnson syndrome is presented. Intensive ophthalmological care may prevent long-term complications such as symblepharon, dry eye syndrome and corneal lesions.

Adult↗
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

[Studies of releasing rate of pilocarpine hydrochloride from hydrogel eye ointments].

The aim of the study was to evaluate the usefulness of hydrophilic base with pilocarpine hydrochloride. Comparisons were made between releasing rate of pilocarpine hydrochloride from hydrophilic and lipophilic bases into water and artificial tears. It was found that pilocarpine hydrochloride was released in the amount 30-40 times greater from hydrogel bases compared to lipophilic. The releasing rate of drugs from hydrogel ointments increases with the increased colloid concentration and with decreased of drug concentration in the base.

Ointment Bases↗
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↗
PubMed1993

[Experimental studies on the usefulness of photodynamic method in diagnosis and treatment of melanoma].

The authors present results of experimental studies on the usefulness of hematoporphyrin and laser in diagnosis and treatment of intraocular tumors. An amelanotic Greene melanoma was implanted into anterior chamber of 10 rabbits. After administration of HpD the tumor was irradiated with laser light of wavelengths 406 nm for diagnosis and 630 nm for selective destruction of neoplastic cells. During follow-up the tumor was growing pale and its gradual shrinkage was observed. In histopathological examination multiple area of necrosis with total destruction of blood vessels were found.

Animals↗
PubMed1993

[Intraocular tamponade with SF6 gas in the treatment of selected cases of retinal detachment].

The aim of this paper is to present the results of the endotamponade with SF6 gas in the treatment of 19 patients with retinal detachment. The cases selected for the surgery were characterised by the retinal tear situated in the upper part of the fundus of the eye or in the posterior pole with no symptoms of PVR phase C and D and vitreo-retinal traction. The indications for endotamponade, the causes of failures and the complications connected with this kind of surgery were discussed.

Adolescent↗
PubMed1992

[Clinical evaluation of Ocuflur].

Presented is the initial clinical evaluation of Ocuflur, a compound of Allergan. The influence of the drug on the size of the pupil and the reaction of the pupil to a light flash was tested in volunteer subjects. The efficacy of the drug was tested intraoperatively.

Cataract Extraction↗
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

[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

[Fluorescein angiography of the iris in pseudophakia].

Investigations were performed in a group of 16 patients after cataract extraction with implantation of an intraocular artificial lens. The authors evaluated the condition of the iris on the basis of a biomicroscopic examination and fluorescein angiography up to 1 year after surgery.

Aged↗