MICROTOPOGRAPHY OF THE BACK POLE OF THE EYEBALL IN THE INTERMEDIATE FETAL PERIOD OF HUMAN ONTOGENESIS

Abstract

The goal is to give a qualitative and quantitative characteristic of the microtopography of the back pole of the eyeball in the intermediate fetal period of human ontogenesis.Material and methods. The serial histotopograms of the eyeball of fetuses from 14 to 27 weeks of fetal development were studied. All study material was divided into three age groups (14-18 weeks; 19-23 weeks; 24-27 weeks). The statistical processing was conducted using Statistica 10.0.Results. In the intermediate fetal period the thickness of the membranes of the back pole of the eyeball is on average 0.97±0.18 mm, while the thickness of the fibrous membrane, choroid and retina is on average 0.56±0.02 mm, 0.26±0.03 mm and 0.17±0.03 mm respectively. Depending on age, the thickness of all membranes at the back pole of the eyeball increases. Most of all, the fibrous membrane increases from 0.28±0.05 mm to 0.79±0.05 mm. The gender differences were revealed in growth rate.Conclusions. The intermediate fetal period is a period of active growth of the membranes of the back pole of the eyeball. During intermediate fetal period there is a change in the thickness ratio of all membranes because of appearing gender differences in their microtopography.