2003
DOI: 10.1016/s0014-4835(03)00055-1
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Corneal thickness and endothelial cell density measured by non-contact specular microscopy and pachymetry in Rhesus macaques (Macaca mulatta) with laser-induced ocular hypertension

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Cited by 37 publications
(30 citation statements)
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“…Collectively, the literature points to a lamellar arrangement and general morphology grossly similar to that seen in human cornea, while small-angle X-ray scattering (SAXS) patterns from the centre of macaque monkey corneas have disclosed collagen fibrils only marginally larger and more widely spaced than those observed in humans (Meek and Leonard, 1993). However, no literature exists documenting collagen organisation as a function of position in the primate cornea, despite the biomechanical importance of this information Clinically, factors impacting on the biomechanical stability of the monkey cornea are of considerable interest, particularly as the monkey is widely used as an animal model for human ocular diseases affecting corneal shape (Fortune et al, 2002;Ollivier et al, 2003;Peiffer et al, 1987), and in developing new techniques for refractive surgery (Melles et al, 1998;Petroll et al, 1992;Werblin, 1992). In this paper we have employed wide-angle X-ray scattering (WAXS) methods to gain new insight into the collagenous makeup of the corneal stroma of the common marmoset, and we compare the results with those obtained from humans.…”
Section: Introductionmentioning
confidence: 99%
“…Collectively, the literature points to a lamellar arrangement and general morphology grossly similar to that seen in human cornea, while small-angle X-ray scattering (SAXS) patterns from the centre of macaque monkey corneas have disclosed collagen fibrils only marginally larger and more widely spaced than those observed in humans (Meek and Leonard, 1993). However, no literature exists documenting collagen organisation as a function of position in the primate cornea, despite the biomechanical importance of this information Clinically, factors impacting on the biomechanical stability of the monkey cornea are of considerable interest, particularly as the monkey is widely used as an animal model for human ocular diseases affecting corneal shape (Fortune et al, 2002;Ollivier et al, 2003;Peiffer et al, 1987), and in developing new techniques for refractive surgery (Melles et al, 1998;Petroll et al, 1992;Werblin, 1992). In this paper we have employed wide-angle X-ray scattering (WAXS) methods to gain new insight into the collagenous makeup of the corneal stroma of the common marmoset, and we compare the results with those obtained from humans.…”
Section: Introductionmentioning
confidence: 99%
“…(9) Outros autores observaram que a baixa DCEC está relacionada com a duração da elevação da Po. (5) Apesar da média da escavação do disco óptico no grupo sem MMC ter sido um pouco maior que no grupo com MMC, esta diferença não foi estatisticamente significativa, sendo justificada pela característica crônica da doença no primeiro grupo.…”
Section: Discussionunclassified
“…(4) Além disso, a diminuição da DCEC está relacionada com o tempo de permanência da pressão intra-ocular (Po) elevada, sendo aquela maior quanto maior o tempo da persistência da elevação da Po. (5) Acrescente-se que a diminuição na DCEC é verificada em pacientes portadores de glaucoma que são submetidos a trabeculectomia (TREC), principalmente quando evoluem com câmara anterior rasa no pós-operatório. Observa-se que o toque iridocorneano acarreta uma perda de 10% das células endoteliais e o toque córneolenticular é ainda mais traumático ao endotélio devendo ser tratado imediatamente.…”
Section: Introductionunclassified
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“…Next, Doughty (1990) described a coefficient of variation that describes changes in cell area size in images, and later Doughty (1992) discussed the hexagonality measure, which is understood as the probability of finding a hexagonal cell in the image. Ollivier et al (2003) proved that these parameters are likely to describe endothelial layer function, because the researchers noticed that size distribution varies between healthy and pathological tissues. Gronkowska-Serafin and Piorkowski (2014) introduced a novel parameter that describes the average coefficient of variation of cell side lengths and proved its high stability compared to previous cell shape parameters.…”
Section: Existing Medical Parametersmentioning
confidence: 99%