PEDIATRIC SOFT CONTACT LENS

摘要

A pediatric soft contact lens is designed as the hollow spherical segment with concave surface contacting the cornea with curvature radius Rb and convex external surface with radius and shape corresponding to the type of the lens (convergent or divergent) and the specified optical power. The internal diameter Dis not higher than , the curvature radius Rb is not less than being within the range of (0.52-0.73) D. Lesser values of Rb/Dratio correspond to superior Dvalues and vice versa.