SPATIAL-DISTRIBUTION OF BACK SCATTERING IN THE NUCLEAR-AREA OF THE NON-CATARACTOUS HUMAN LENS

The spatial distribution of back scattering from a vertical cross-sect ion of the nuclear area in non-cataractous human lens was investigated . The cross-section was centred on the pupil. There is no significant difference in average nuclear back scattering between sides. The distr ibution of back scattering along an axis perpendicular to the anatomic al axis can be modelled as a second-order polynomial, It is believed t hat the increase of back scattering in the central region corresponds to the peak protein concentration in the centre of the nucleus. This i nformation was obtained by imaging back scattering with Scheimpflug ph otography, The back scattering was measured photometrically in a 3 x 1 0 matrix of measuring areas within the lens nucleus. Each measuring ar ea was 0.20 x 0.20 mm in size. It is anticipated that the established model will allow detection of nuclear cataract with high sensitivity, especially in early stages.