Areas of application. Ophthalmology
Last years, method of low temperature treatment is widely spread in ophthalmooncology. Contact cryodestruction of tumours of eyelid skin is performed without anaesthesia and, as a rule, in outpatient facilities.
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tumours of considerable area are frozen according to the main ablastics rules from periphery to centre; and for optimally successful freezing operation, multiple “freezing-thawing” cycles are recommended to be applied.
Response of tissues to cryosurgery is moderate, edema and hyperemia of tissues occurred in the first minutes would disappear by 5-6-th day, and the formed crust — in 2-3 weeks.
Malignant tumours need deeper freezing, thus exposure of “freezing-thawing” cycle is increased. Freezing time and number of applications are determined by tumour size and depth.
The deeper tumour freezing causes the more pronounced response of tissues lasting up to 14-15 days. Complete tumour resorption with its replacement with tender cicatrix occurred to the end of 4-5th week.
Ten years’ experience of cryodestruction application with using refrigerants allows considering it as a simple and highly effective method of treatment that gives good therapeutic effect in 93% of patients with tumours of additional eye apparatus and in 80 % of patients with intraocular tumours. Cryogenic fixation of eye during enucleation serves as a preventive measure for metastases development and many authors emphasize such opportunity during the surgery. Very important fact is that cryosurgery in ophthalmology with appreciable functional and cosmetic benefits is superior to other alternative methods of treatment.








