<prompt> Glaukomflecken isAcute uveitis due to glaucomaLens opacity due to glaucomaRetinal detachment due to glaucomaCorneal opacity due to glaucoma  <response>: Acute congestive angle closure may cause small anterior grey-white subcapsular or capsular opacities, glaukomflecken to form within the pupillary area. These represent focal infarcts of the lens epithelium and are almost pathognomonic of prior acute angle-closure glaucoma. Ref: kanskis clinical ophthalmology, 8th edition , page no. 273 