[Scattered light in implanted artificial lenses in a model trial].

The scattered light produced by 4-loop Binkhorst anterior chamber lenses, Kratz Elliptical posterior chamber lenses and Choyce Mark IX anterior chamber lenses were investigated in relation to different pupil diameters (1.5; 4.0; 6.0 and 8.0 mm) using a model. The light ray first met the anterior surface of the lens vertically and thereafter from 30 degrees to the left. The scattered light was photographically documented. The most scattered light was produced by the Binkhorst 4-loop anterior chamber lens and was caused by the fixation points of the loops near the centre of the lens. This was deduced from the fact that no scattered light could be seen if the pupil diameter was 1.5 mm, a situation one cannot find in a patient where the pupil is incapable of contracting to such an extent because of the loops. The Kratz Elliptical posterior chamber lens generally produced a minimum of scattered light. Increased glare sensitivity diminishing the ability to drive under mesopic conditions can be due to scattered light produced by artificial lenses.