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  • Title: Optical coherence tomographic features of feline acute corneal hydrops: A case report.
    Author: Jeong M, Yoo S.
    Journal: Vet Ophthalmol; 2024 Mar; 27(2):191-196. PubMed ID: 38413366.
    Abstract:
    OBJECTIVE: The objective of the study was to describe the optical coherence tomographic features of a cat with acute corneal hydrops. ANIMAL STUDIED: A 4-year-old castrated male domestic shorthaired showing conjunctival redness, ocular discharge, and intermittent squinting of both eyes with asymmetrical disease onset. METHODS: Complete ophthalmic examination and optical coherence tomography were performed. RESULTS: On slit-lamp biomicroscopic examination, severe intrastromal fluid pockets with profound bullae were observed in the dorsomedial region in both eyes. A diagnosis of feline acute corneal hydrops was made in both eyes. Optical coherence tomography revealed profound stromal lamellar separation representing heterogeneous reflective areas, and fluid pockets and bullae of variable size were concomitant to Descemet's membrane detachment demonstrated by a well-defined homogeneous hyporeflective area. Upon reevaluation 30 days during healing process for both eyes, the thickened epithelia and the thinning pan-stromal areas were identified as homogeneously hyper-reflective epithelia and as heterogeneous hyper-reflectivity, respectively. A thickened posterior corneal surface was shown as heterogeneous with patchy hyper-reflectivity. Additionally, Descemet's membrane detachment in the initial presentation had two distinct forms suspicious of Descemet's membrane rupture in each eye: a break with rolled ends and a break with flat ends. CONCLUSION: To the author's knowledge, this study represents the first documentation of in vivo detection of Descemet's membrane detachment and presumed rupture in a cat experiencing acute corneal hydrops. These observations strongly indicate that Descemet's membrane detachment/rupture acts as a most likely risk factor in the onset of acute corneal hydrops in cats.
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