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[Histopathological observations on bullous keratopathy after argon-laser iridotomy]. 1999

R J Chen, and A Momose, and S Okisaka, and A Mizukawa
Eye and Ear Nose Throat Hospital of Shanghai Medical University, Japan.

OBJECTIVE To elucidate histopathological mechanism of bullous keratopathy after argon-laser iridotomy (ALI). METHODS The patient was a 60-year-old female who underwent penetrating keratoplasty because of bullous keratopathy after 2 years and 2 months of ALI. The corneal specimen was fixed with a mixture of 2.5% formalin and 1.0% glutaraldehyde, and examined under light and electron microscopes. Laser-damaged endothelium produced a large amount of basement membrane-like material beneath Descemet's membrane. At the next stage, the severely damaged endothelium lost its organellae and cell membranes, and fell off. The surrounding healthy endothelium migrated into the damaged area and produced a small amount of material like basement membrane which covered Descemet's membrane. After that, stromal swelling, decrease of keratocytes, breaking and disappearance of Bowman's membrane, epithelial edema, connective tissue accumulation beneath basal cells, and epithelial detachment occurred in the laser-damaged area.

UI MeSH Term Description Entries
D007498 Iris The most anterior portion of the uveal layer, separating the anterior chamber from the posterior. It consists of two layers - the stroma and the pigmented epithelium. Color of the iris depends on the amount of melanin in the stroma on reflection from the pigmented epithelium.
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D003316 Corneal Diseases Diseases of the cornea. Corneal Disease,Disease, Corneal,Diseases, Corneal
D004728 Endothelium, Corneal Single layer of large flattened cells covering the surface of the cornea. Anterior Chamber Epithelium,Corneal Endothelium,Endothelium, Anterior Chamber,Epithelium, Anterior Chamber,Anterior Chamber Endothelium
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015948 Keratoplasty, Penetrating Partial or total replacement of all layers of a central portion of the cornea. Keratoplasties, Penetrating,Penetrating Keratoplasties,Penetrating Keratoplasty
D053685 Laser Therapy The use of photothermal effects of LASERS to coagulate, incise, vaporize, resect, dissect, or resurface tissue. Laser Knife,Laser Scalpel,Surgery, Laser,Vaporization, Laser,Laser Ablation,Laser Knives,Laser Photoablation of Tissue,Laser Surgery,Laser Tissue Ablation,Nonablative Laser Treatment,Pulsed Laser Tissue Ablation,Ablation, Laser,Ablation, Laser Tissue,Knife, Laser,Knifes, Laser,Knive, Laser,Knives, Laser,Laser Knifes,Laser Knive,Laser Scalpels,Laser Surgeries,Laser Therapies,Laser Treatment, Nonablative,Laser Treatments, Nonablative,Laser Vaporization,Nonablative Laser Treatments,Scalpel, Laser,Scalpels, Laser,Surgeries, Laser,Therapies, Laser,Therapy, Laser,Tissue Ablation, Laser

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