The research presents preliminary data about influence of everyday illumination spectra on the postnatal development of the sclera (blue light - 450 nm; long-wave red light - 630 nm and daylight for the control group). Japanese quail ( Coturnix coturnix japonica dom. ) are widely used animal model for studying of eye development structures and various eye disorders. The thickness of sclera was studied by non-invasive methods using scanning impulse acoustic microscopy, which allows to take measurements with minimal distortion in situ . After the sclera was isolated, mechanical tests were carried out and the main physico-mechanical characteristics were determined. It was shown that on the 23rd day of postnatal development in blue light conditions the decrease in the thickness of the sclera (∆14%) is observed in combination with a decrease in its elasticity (∆7%). Interpretation of mechanical test results was made via a model of high elasticity based on non-Gaussian statistics that estimates the locations of the main structural elements of the sclera (extracellular matrix). The model revealed some features of the sclera development under different spectral illumination. The work was performed as part of the tasks of kid's myopia modeling.
sclera, quail, extracellular matrix, ultrasound microscopy, physico-mechanical characteristics, native tissue
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