<prompt> Irido- Corneal Endothelial syndrome is characterized byOpacity of the cornea with edema of the stromaDeposition of abnormal collagen in descemets membraneDeposition of glycosaminoglycans in the descemets membraneDiffuse bilateral senile iris degeneration  <response>: B i.e. Deposition of abnormal collagen in the Descemets membrane In iridocorneal endothelial syndrome descemets membrane may show increased thickness because of presence of abnormal posterior collagenous layerQ. 