BIOCHEMICAL CHARACTERISTICS OF THE UPPER EYELID TISSUES IN THE CHILDREN WITH CONGENITAL PTOSIS

Abstract


The objective of the present work was to study biomechanical characteristics of the upper eyelid tissues (skin, levator and circular muscles) in 33 children at the age varying from 3 to 17 years presenting with congenital ptosis. Analysis of the results of mechanical testing of 62 tissue samples obtained in the course of reconstructive treatment of congenital ptosis has demonstrated their specific stress-strain properties related to the patients’ age and the severity of the disease. The most conspicuous biomechanical abnormalities associated with the severe form of congenital ptosis were found in the levator muscle. They correlated with the changes in the biomechanical properties of the upper eyelid skin. The changes in the circular muscle of the children with congenital ptosis were less apparent compared with those in the levator muscle and the upper eyelid skin.

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About the authors

I. A Filatova

Moscow Helmholtz Research Institute of Eye Diseases


E. N Iomdina

Moscow Helmholtz Research Institute of Eye Diseases

Email: iomdina@mail.ru

D. N Sitnikova

Moscow Helmholtz Research Institute of Eye Diseases


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