[Prevalence of myopia in Khakasia].

The paper presents the results of studying the prevalence of myopic refraction in adolescents in the Republic of Khakasia in relation to the state of their accommodation-convergence apparatus, constitution, ethnicity, and the type of a settlement. Myopia has been found to occur 3 times more frequently among the urban adolescents. The results have led to the conclusion that urban living conditions may be a determinant of enhanced refraction.

[The influence of transplanted culture of bone marrow stromal cells on reparative osteohistogenesis in parietal bone defect].

Recently the problem connected with transplantation of bone marrow stromal cells for optimization of reparative osteogenesis is very actively studied. However, the objective methods allowing to observe the behavior of transplanted cells in a bone wound and to estimate character of regenerative osteogenesis after cell transplantation are used in an insufficient measure in both experimental and clinical researches. The aim of this study is to clarify the fate of stromal cells in a bone wound and to investigate the influence of bone marrow stromal cells on the process ofposttraumatic osteogenesis after cell transplantation in parietal bone defect.