OPTICAL METHOD OF EXPRESS-CONTROL OF TEAR FLUID FUNCTIONAL STATE Russian patent published in 2010 - IPC A61B3/10 A61B5/107 

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, in particular to methods of functional diagnostics of functional state of tear fluid, which is to great extent determined by surface tension of tear fluid. By means of optical coherent tomograph image of tear fluid meniscus between cornea and lower eye-lid is obtained. On the basis of obtained image value of meniscus chord (h) and meniscus flexure (x) are determined. Coefficient of surface tension of tear fluid (α) is determined: where ρ is tear fluid density, equal 1000 kg/m³, g is free fall acceleration, equal 9.8 m/s². Obtained coefficient is compared with average standard value. If obtained value is higher than standard value conclusion about disturbance of tear fluid functional state is made.

EFFECT: method allows to determine tear fluid functional state in process of optical express-diagnostics of moistening cornea with tear fluid due to determining its surface tension coefficient.

3 dwg, 1 ex