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Biomedical subjects

J Szatkowski

Publications and source records attributed to J Szatkowski.

12 recordsLinked to original sources
PubMed2001

[Evaluation of the surface of the new intraocular lenses in the scanning electron microscope].

PURPOSE: To evaluate the surface of the new PC IOLs commercially available in Poland in 2000. MATERIAL AND METHODS: Representative samples of new posterior chamber IOLs produced by 6 different companies (Alcon, Lensita, Medicontur, Opsia, Rayner, Storz), 5 of each, underwent surface examination with Novoscan 30 scanning electron microscope. RESULTS: Although, in general, smooth surface of optic and haptic parts were observed, three samples with irregularities were found. CONCLUSIONS: Comparing to previous evaluation performed in 1994, significant improvement in quality of IOLs surface was noted. No considerable differences in this field between above mentioned producers were observed.

Biocompatible Materials↗
PubMed1998

[The evaluation of surface deposits on frequent replacement lenses by scanning electron microscopy (SEM)].

PURPOSE: The aim of our study was to find the method of preparation of soft contact lenses for examination by SEM and next evaluation of deposits on the surfaces of frequent replacement lenses. MATERIAL AND METHODS: Frequent replacement contact lenses (Acuvue) stored in physiological saline, distilled water and sterile, dry container were prepared for examination by SEM (Novoscan 30). The best quality preparations were made from contact lenses stored in sterile, dry container and dried at room temperature. Acuvue contact lenses were taken from five young, healthy persons after one, two, three and four weeks of wearing. All the lenses were examined by SEM. RESULTS: We observed nearly all the components of tear film on the surfaces of the lenses. Flat, amorphic protein, crystalline deposits, fibrinous structures were usually observed. Sometimes the nectrotic cell were seen. In one preparation we found bacteria. The amount of deposits was not high and did not increase with four weeks time of lens usage. The quality and quantity of deposits were individually variable. CONCLUSIONS: The methods we choose let us to prepare good quality preparations of soft contact lenses for examination by SEM. On the surfaces of the frequent replacement contact lenses we found only a small quantity of deposits.

Contact Lenses↗
PubMedDate not supplied

[Evaluation of new intraocular lenses in a scanning microscope].

New posterior chamber lenses produced by 6 different companies, 3 from each, were examined in a Novoscan 30 scanning microscope. Practically in each lens irregularities of the surface of the haptic part were found and in many of them also in the optic part. The relatively smallest irregularities were observed in the lenses of the companies (in alphabetical order): Alcon, Domilens and Storz.

Lenses, Intraocular↗