Density of corneal endothelial cells and corneal thickness in eyes of euthanatized horses

Andrew, Stacy E.; Ramsey, David T.; Hauptman, Joe G.; Brooks, Dennis

doi:10.2460/ajvr.2001.62.479

Cited by 58 publications

(93 citation statements)

References 12 publications

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“…This study showed that the parameters evaluated did not differ significantly between both eyes from the same ostrich. Such findings are in agreement with previous studies (TUFT & COSTER, 1990;ANDREW et al, 2001;PIGATTO et al, 2004;PIGATTO et al, 2005b). The ultrastructure and the morphometric parameters of the Ciência Rural, v.39, n.3, mai-jun, 2009.…”

Section: Objetivousupporting

confidence: 83%

“…In most vertebrates the shape of normal corneal endothelial cells shows a mosaic-like pattern of polygonal cells (YEE et al, 1987;COLLIN & COLLIN, 1998;ANDREW et al, 2001;PIGATTO et al, 2004;PIGATTO et al, 2005a;PIGATTO et al, 2006). The pleomorphic characteristics of ostrich corneal endothelium are similar to those of man, cat, dog, and other vertebrates, where 65-80% of corneal endothelial cells area hexagonal (DOUGHTY, 1989;PIGATTO et al, 2005a).…”

Section: Objetivoumentioning

confidence: 89%

“…The structure of the normal corneal endothelium has been documented in humans (ABIB & BARRETO, 2001), dogs (GWIN et al, 1982;PIGATTO et al, 2006;RODRIGUES et al, 2006), horses (ANDREW et al, 2001) and other animal species (YEE et al, 1987;COLLIN & COLLIN, 1998;PIGATTO et al, 2004;PIGATTO et al, 2005a;PIGATTO et al, 2005b). The ostrich (Struthio camelus) is the world's largest living bird.…”

Section: Objetivoumentioning

confidence: 99%

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Scanning electron microscopy of the corneal endothelium of ostrich

et al. 2009

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Section: Objetivousupporting

confidence: 83%

Section: Objetivoumentioning

confidence: 89%

Section: Objetivoumentioning

confidence: 99%

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Scanning electron microscopy of the corneal endothelium of ostrich

et al. 2009

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“…As células endoteliais limitam a entrada de água e de solutos oriundos da câmara anterior para o estroma corneano; portanto, uma densidade mínima destas é necessária para manter a transparência e a funcionalidade corneanas (ANDREW et al, 2001).…”

Section: Introductionunclassified

Espessura E Densidade De Células Endoteliais Corneanas Em Ovinos

Brandão¹,

Ranzani²,

Rodrigues³

et al. 2006

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RESUMO:A córnea é transparente, sendo suas principais funções a transmissão e a refração da luz. Compreende quatro camadas, dentre elas, o endotélio corneano, que é constituído por uma única camada de células hexagonais interligadas, formando uma barreira entre o estroma corneano e o humor aquoso, limitando a entrada de água e solutos oriundos da câmara anterior para o estroma. Portanto, uma densidade mínima é necessária para manter a transparência e a funcionalidade corneanas. Objetivou-se determinar a densidade de células endoteliais e a espessura corneanas, utilizando-se microscopia especular de não contato, em 22 olhos provenientes de 11 ovinos. A média de densidade celular endotelial corneana foi de 2726 céls/mm 2 e a espessura 654 µm. Os machos apresentaram médias de densidades superiores e áreas celulares inferiores em relação às fêmeas.Palavras-chave: Córnea, ovino, microscopia especular, densidade celular, espessura. ABSTRACT:The cornea is transparent layer of the eye, transmission and refraction of light being their main functions. The endothelium, one of the cornea four layers, is a hexagonal unicellular layer that forms a barrier between the stroma and aqueous humor, obstructing the entrance of water and others solutes from the anterior chamber towards the stroma. In the regard to it, a minimum density of these cells is necessary to maintain the performance and clarity of the eye visual capacity. The main objective of the present research was the determination of the density of endothelial cells and their corneal thickness, using a noncontact specular microscope, in 22 eyes from 11 ovines. The average density of the endothelial corneal was 2726 cels/mm² and the thickness 654 µm. The males displayed a higher average density and a smaller cell area than the females.

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“…Specular microscopy is among the most reliable techniques for analysing the corneal endothelium (ABIB & BARRETO, 2001;NAGATSUYU et al, 2014). Normal endothelial parameters have already been established in some species using a specular microscope, including: humans, sheep, dogs, monkeys, horses, cats, and others (ABIB & BARRETO, 2001;ANDREW, S. et al 2001;PIGATTO et al, 2006;PIGATTO et al, 2008;FRANZEN et al, 2010;BERCHT et al, 2015;COYO et al, 2016;TERZARIOL et al, 2016). Furthermore, specular microscopy is beginning to be used as part of the ophthalmic examination before and after cataract removal procedures in dogs (NAGATSUYU et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Corneal endothelial cell density and morphology in rabbits’ eyes using contact specular microscopy

et al. 2017

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The goal of this study was to describe the normal values of corneal endothelial cell density and hexagonality in healthy rabbits’ eyes using contact specular microscopy. Both eyes of 18 rabbits, males and females, of different ages were evaluated. The eyes were divided into three groups of 12 each according to the age range of the animals: G1 (6 months old), G2 (12 months old), and G3 (48 months old). Parameters studied included mean endothelial cell density and hexagonality. For Group I, the mean cell density was 2307 cells per mm2. For GII, the mean cell density was 1895 cells per mm2. For G III, the mean cell density was 1818 cells per mm2. Cell density decreased significantly with aging (P<0.001) among the three groups. Pleomorphism in the rabbits of GI was 74.33±10.08. In the rabbits of GII it was 71.83±11.38. In the rabbits of GIII it was 64.02±28.80. Significant differences (P<0.001) were evident between GI and GIII and GII and GIII but not between Groups I and II. The results showed a decrease in number of cells and hexagonality with aging. Corneal endothelium of rabbits suffers changes due to advancing age both in terms of cell density and morphology.

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Density of corneal endothelial cells and corneal thickness in eyes of euthanatized horses

Cited by 58 publications

References 12 publications

Scanning electron microscopy of the corneal endothelium of ostrich

Scanning electron microscopy of the corneal endothelium of ostrich

Espessura E Densidade De Células Endoteliais Corneanas Em Ovinos

Corneal endothelial cell density and morphology in rabbits’ eyes using contact specular microscopy

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