Corneal dystrophy Lattice corneal dystrophy SNOMEDCT_US:1192004 Biber haab dimmer dystrophy UMLS:C0155127 The presence of fine, branching linear opacities in Bowman's layer in the central area that may spread to the periphery in the clinical course. The deep corneal stroma may be involved but the process does not reach Descemet's membrane. Recurrent corneal erosion may occur. Histologic examination reveals amyloid deposits in the collagen fibers of the cornea. SNOMEDCT_US:361199007 HP:0001149