Scleral contact lens set for test box has similar corneal and overall diameters for all lenses

摘要

The set of scleral contact lenses with an optical radius (Ro), a corneal zone (Zc) with a pitch (F), a transition zone (Zt) and a haptic zone (Zs) has a corneal diameter (02) of 14 mm plus/minus 1 mm, an overall diameter (0t) of 19 mm plus/minus 4 mm, and a corneal pitch (F) varying between 15/100 mm and 15/100 plus/minus 5/100 mm between one lens and another in the set, and preferably 20/100 mm. The transition zone (Zt) is defined by a series of radii of curvature (R1, R2, R3) linked to the optical radius (Ro) by a fixed relationship.