<prompt> Pigmentary glaucoma showsFevy lineFlesscher lineHadson hauti lineKrukenberg spindle  <response>: PIGMENTARY GLAUCOMAIt is a type of secondary open-angle glaucoma wherein clogging up of the trabecular meshwork occurs by the pigment paicles. About 50 of patients with the pigment dispersion syndrome develop glaucoma.Pathogenesis. The exact mechanism of pigment shedding is not known. It is believed that, perhaps, pigment release is caused by mechanical rubbing of the posterior pigment layer of iris with the zonular fibrils.Clinical features. The condition typically occurs in young myopic males. Characteristic glaucomatous features are similar to primary open angle glaucomaPOAG, associated with deposition of pigment granules in the anterior segment structures such as iris, posterior surface of the cornea Krukenbergs spindle, trabecular meshwork, ciliary zonules and the crystalline lens. Gonioscopy shows pigment accumulation along the Schwalbes line especially inferiorly Sampaolesis line. Iris transillumination shows radial slit-like transillumination defects in the mid-periphery pathognomonic feature.Treatment: It is exactly along the lines of primary open-angle glaucoma.Ref: Khurana; 4th edition; Pg. 234 