[Effects of artificial gravity on perimetry results]. / Vliyanie iskusstvennoi gravitatsii na izmenenie perimetricheskikh pokazatelei organa zreniya.

The active exploration of space requires minimizing negative effects induced by weightlessness (microgravity). Risk reduction can be achieved with the use of artificial gravity created by short-radius centrifuge (SRC). Short-radius centrifuge causes redistribution of body liquids towards the caudal portion of the body imitating a vertical human pose. Presently, studying the safety of this prevention method for the human body in general, and for the visual system in particular, is one of the priority tasks of space medicine. PURPOSE: To study the effects of artificial gravity on the perimetry measurements of the eye. MATERIAL AND METHODS: The study included 9 volunteers (men) aged 31.2±6 years (from 25 to 40 years). Each man was subjected to three rotations on SRC. The operative factor in the tests was overloads in the «head-pelvis¼ direction. Rotations were carried out in three different modes with varying maximum overload value at the feet level of up to 2.0; 2.4; 2.9 G. Pulsar-perimetry was carried out before and 1-2 hours after the rotations estimating the mean threshold of retinal photosensitivity Mean Sensitivity (MS), mean loss of sensitivity Mean Defect (MD), square root of Loss Variance (sLV); the Bebie curve; additionally, cluster analysis was performed. RESULTS: Mean threshold of retinal photosensitivity, mean loss of photosensitivity, square root of Loss Variance by Pulsar-perimetry before (MS=22.75 dB; MD= -0.6 dB; sLV=1.5) and after rotations on SRC (in Mode 1: 23.4; -0.2; 1.5, Mode 2: 23.2; -0.4; 1.4 and Mode 3: 23.5; -0.8; 1.4 respectively) did not change significantly. No adverse phenomena were detected in the eyes. CONCLUSIONS: There were no significant changes in the visual fields of the test subjects after rotations in three different modes according to Pulsar-perimetry data, which gives reason to tentatively conclude that using SCR in these modes is safe for the visual sensory system. According to preliminary data, this method can be successfully used to reduce the risk of long-term space flights and prevent unwanted phenomena caused by weightlessness.

[An application of endoscopic argon-plasma coagulation in men with ulcer disease complicated with hemorrhages].

In structure of the complicated forms of a stomach ulcer gastroenteric bleedings make 42-47%. Practically all of them are accompanied by development sharp an anemias. At an out-patient stage at patients with a stomach ulcer complicated gastrointestinal bleeding, the doctor is engaged in correction. However, the question of indemnification anemias remains more often without attention though, from modern positions of specialized treatment of a stomach ulcer, also demands the specialized approach for optimum terms of rehabilitation of patients.

[The surgical results in progressive myopia in children]. / Rezul'taty khirurgicheskogo lecheniia progressiruiushchei miopii u detei.

The paper analyses effectiveness of surgical treatment on occasion of progressive myopia in 96 children (180 eyes), aged from 5 to 14 years, depending on the patient's age, the form of myopia (congenital, acquired). Scleroplasty was made after the method of N. N. Pivovarov et al. Remote results, from 1 to 1.5 years, have shown stabilization of myopia in 90% of cases. Absolute and relative indications to surgical treatment of myopia are shown. The necessity of further studying of the mechanism and effectiveness of scleroplasty in children is substantiated.