Images obtenues par tomographie par cohérence optique (OCT) de la rétine du chat en utilisant un SD-OCTIVUE

Geyer, G.

doi:10.4267/2042/67630

Cited by 1 publication

(3 citation statements)

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“…In accordance with descriptions of OCT in healthy cats by Espinheira et al, Gekeler et al, and Mischi et al 16,17,19 in glaucomatous cats and in miscellaneous pathologic fundi by De Geyer, 18 we were not able to individualize with certainty the presence or absence of the RPE single layer in the present case in the colobomatous fundic zones. Our considerations are consistent with their conclusions in the fact that the broader band under the retina probably corresponds to the complex of the tapetum lucidum and the RPE‐BM/choriocapillaris indiscriminately.…”

Section: Discussionsupporting

confidence: 87%

“…Several studies have shown that spectral domain OCT (SD-OCT) is a reliable method to evaluate different retinal layers and optic nerve morphology in colobomas in dogs, 15 in healthy or glaucomatous cats. [16][17][18] Recently, it has been published that outer retinal band and choriocapillaris can be identified in healthy dogs and cats, 19 and different vascular layers of the retina and choroid are nicely evaluated by OCT-A in cats. 20 The present report describes the clinical case of bilateral corneal dermoids associated with bilateral choroidoscleral colobomas in a cat, its SD-OCT fundus evaluation, the surgical outcome and the follow-up of lesions up to 18 months.…”

Section: Introductionmentioning

confidence: 99%

“…Optical coherence tomography is a non‐invasive imaging technique to explore the choroid and retina adjacent to staphylomas, and colobomas in humans. Several studies have shown that spectral domain OCT (SD‐OCT) is a reliable method to evaluate different retinal layers and optic nerve morphology in colobomas in dogs, 15 in healthy or glaucomatous cats 16–18 . Recently, it has been published that outer retinal band and choriocapillaris can be identified in healthy dogs and cats, 19 and different vascular layers of the retina and choroid are nicely evaluated by OCT‐A in cats 20 …”

Section: Introductionmentioning

confidence: 99%

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Bilateral corneal dermoids associated with bilateral choroido–scleral colobomas in a cat: retinographic and optical coherence tomography study with surgical outcome and follow–up

Cognard¹,

Cassagnes

Chaudieu³

et al. 2023

Veterinary Ophthalmology

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Purpose To report a case of feline bilateral corneal dermoids, associated with unilateral iris coloboma and bilateral choroido‐scleral colobomas in the same dorsolateral position, to describe retinographic and optical coherence tomography (OCT) characteristics, surgical outcome, and follow‐up. Animal studied A 9‐month‐old domestic shorthaired cat in which a full ophthalmoscopic examination was performed for evaluation of dermoids resulting in a diagnosis of associated iris coloboma in one eye and posterior colobomas in both eyes. Procedures Retinographies and OCT were performed under anesthesia to characterize the lesions of both fundi and allow surgical excision of the corneal dermoids. Results Ophthalmoscopy and retinographies revealed oval lesions in the dorsolateral fundi of both eyes. The lesions precisely mirrored their respective dermoids' (10‐11 h OD and 1‐2 h OS) clock positions, lacked a tapetum lucidum and choroidal vessels, and featured thin retinal vessels plunging to a posterior plane of the fundus. OCT crossline scans demonstrated preservation of retinal thickness and morphological layering in the fundic colobomas leading to the conclusion that the colobomas were purely choroido‐scleral. The outcome of the surgical excision of the dermoids was satisfactory without hair recurrence and with acceptable corneal clarity making it possible to visualize the unilateral associated iris coloboma. Follow‐ups did not reveal any fundic evolution nor retinal detachment. Conclusions Retinographies and OCT made possible the characterization of choroido‐scleral colobomas associated with corneal dermoids in this first reported case in a cat. We hypothesize that the recently described superior ocular sulcus might be the embryological link between these anomalies.

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Section: Discussionsupporting

confidence: 87%