Fresnel prism effect and chromatic aberration produced by posterior capsular folds after intraocular lens implant

Abstract

We present a previously unreported positive dysphotopsia of an alternating green and red diagonal line after developing posterior capsular folds following uneventful cataract surgery and its management. A 73-year-old man presented complaining of seeing multicolored ray of light obliquely across luminous sources from his left eye 3 weeks after phacoemulsification. He was found to have 3 folds on the posterior capsule, which were perpendicular to the axis of the line of the red and green rays. This was managed with routine Nd:YAG laser posterior capsulotomy, after which his symptoms instantly resolved. To our knowledge, there is no other published report of this multifaceted visual aberration due to posterior capsular folds. Through our case, we highlight that a thorough examination can find a simple solution for a seemingly complex presenting complaint and can avoid unnecessary investigations and invasive procedures.