[Differential diagnosis of retinoblastoma and Coats' retinitis using computer-assisted processing of ultrasonographic scanograms of the eye].

A new method for quantitative evaluation of ultrasonic scanograms of the eye, that permits differentiation between retinoblastoma and Coats' retinitis, was employed in echographic examinations of the eyes in 21 children with suspected intraocular volumic processes. Image analysis by plotting and processing of histogram was employed. High-confidence differences in the 'excess' and 'skewness' meanings of gradient histograms of patients with these two conditions have been detected.

[Validation of the use of brachytherapy in uveal melanomas of juxtapapillary localization].

Forty-two patients with juxtacapillary melanomas of the choroid were treated by brachytherapy. The treatment was carried out in two stages: Stage I--separating laser coagulation, Stage II--irradiation with ophthalmologic applicators (90Sr, 90I). Complete resorption was achieved in 12 patients, partial regression with the process stabilization in 17, no effect in 13, in 11 of these enucleation had to be performed.