The Experts below are selected from a list of 228 Experts worldwide ranked by ideXlab platform
F. C. Stades - One of the best experts on this subject based on the ideXlab platform.
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Persistent hyperplastic Tunica Vasculosa Lentis and persistent hyaloid artery in a 2-year-old basset hound.
The veterinary quarterly, 1999Co-Authors: Anne-marie Verbruggen, Susanne A. E. B. Boroffka, Michael H. Boevé, F. C. StadesAbstract:Summary A 2‐year‐old Basset hound with unilateral persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous is described. There was leukokoria in the left eye, caused by bluish‐white polar densities and haemorrhagic discoloration in the nucleus of the lens. Ultrasonographic examination of the eye revealed a small hyperechoic lens and a hyperechoic linear soft‐tissue strand extending from the posterior pole of the lens through the optic disc. Power Doppler imaging revealed blood flow in this persistent hyaloid artery, but 5 months later, immediately prior to surgery, there was no flow in this artery. Ultrasonography, including Power Doppler imaging, was useful to confirm the diagnosis and to estimate the complications of surgery, especially the risk of vitreal haemorrhage after cutting of the persistent hyaloid artery. Comparison of the ultrasonographic images with those obtained by computed tomography suggested that the resolution of computed tomography is inadequate for identifying structures ...
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ultrasonographic diagnosis of persistent hyperplastic Tunica Vasculosa Lentis persistent hyperplastic primary vitreous in two dogs
Veterinary Radiology & Ultrasound, 1998Co-Authors: Susanne A. E. B. Boroffka, Anne-marie Verbruggen, M. H. Boevé, F. C. StadesAbstract:Ultrasonography was performed on a Basset hound and a Doberman clinically suspected of persistent hyperplastic Tunica Vasculosa Lentis/persistent hyperplastic primary vitreous. In both dogs, hyperechoic lenses with a triangular-shaped echodense structure retrolentally were visible, and a very thin hyperechoic strand was seen penetrating the anechoic vitreous from this retrolental tissue to the area of the optic nerve. Using color Doppler imaging, blood flow was evident in parts of the retina in both dogs. With power Doppler imaging there was blood flow in the lens and hyperechoic strand of the Basset hound on the first examination; whereas, on re-examination 5 months later, this was not found. Other abnormalities, such as retinal detachment, endophthalmitis, vitreous hemorrhage, microphthalmia, and posterior neoplasia could be excluded.
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Ultrasonographic diagnosis of persistent hyperplastic Tunica Vasculosa Lentis/persistent hyperplastic primary vitreous in two dogs.
Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology As, 1998Co-Authors: Susanne A. E. B. Boroffka, Anne-marie Verbruggen, Michael H. Boevé, F. C. StadesAbstract:Ultrasonography was performed on a Basset hound and a Doberman clinically suspected of persistent hyperplastic Tunica Vasculosa Lentis/persistent hyperplastic primary vitreous. In both dogs, hyperechoic lenses with a triangular-shaped echodense structure retrolentally were visible, and a very thin hyperechoic strand was seen penetrating the anechoic vitreous from this retrolental tissue to the area of the optic nerve. Using color Doppler imaging, blood flow was evident in parts of the retina in both dogs. With power Doppler imaging there was blood flow in the lens and hyperechoic strand of the Basset hound on the first examination; whereas, on re-examination 5 months later, this was not found. Other abnormalities, such as retinal detachment, endophthalmitis, vitreous hemorrhage, microphthalmia, and posterior neoplasia could be excluded.
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Early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV)
Graefe's Archive for Clinical and Experimental Ophthalmology, 1993Co-Authors: M. H. Boevé, F. C. Stades, G. F. J. M. Vrensen, B. L. J. C. Willekens, J. S. Linde-sipmanAbstract:This study provides scanning electron microscopic observations on the early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV) in canine fetuses at days 28 35 postcoitum (D28 and D35). From previous studies regarding PHTVL/PHPV it is known that a retrolental plaque of fibrovascular tissue is present in eyes of affected canine fetuses from the D33 stage. The contribution of vitreous cells to the formation of the plaque is supported by the results of this study. The lens capsules at the stages described were not found to contain abnormalities such as transparent (thinner) parts or rents, as have been described for postnatal cases of PHTVL/PHPV. These findings support the hypothesis that the capsular anomalies observed in postnatal patients are secondary entities.
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Early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV). Scanning electron microscopic observations.
Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 1993Co-Authors: Michael H. Boevé, F. C. Stades, G. F. J. M. Vrensen, B. L. J. C. Willekens, Jantine S. Van Der Linde-sipmanAbstract:This study provides scanning electron microscopic observations on the early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV) in canine fetuses at days 28 35 postcoitum (D28 and D35). From previous studies regarding PHTVL/PHPV it is known that a retrolental plaque of fibrovascular tissue is present in eyes of affected canine fetuses from the D33 stage. The contribution of vitreous cells to the formation of the plaque is supported by the results of this study. The lens capsules at the stages described were not found to contain abnormalities such as transparent (thinner) parts or rents, as have been described for postnatal cases of PHTVL/PHPV. These findings support the hypothesis that the capsular anomalies observed in postnatal patients are secondary entities.
M. H. Boevé - One of the best experts on this subject based on the ideXlab platform.
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ultrasonographic diagnosis of persistent hyperplastic Tunica Vasculosa Lentis persistent hyperplastic primary vitreous in two dogs
Veterinary Radiology & Ultrasound, 1998Co-Authors: Susanne A. E. B. Boroffka, Anne-marie Verbruggen, M. H. Boevé, F. C. StadesAbstract:Ultrasonography was performed on a Basset hound and a Doberman clinically suspected of persistent hyperplastic Tunica Vasculosa Lentis/persistent hyperplastic primary vitreous. In both dogs, hyperechoic lenses with a triangular-shaped echodense structure retrolentally were visible, and a very thin hyperechoic strand was seen penetrating the anechoic vitreous from this retrolental tissue to the area of the optic nerve. Using color Doppler imaging, blood flow was evident in parts of the retina in both dogs. With power Doppler imaging there was blood flow in the lens and hyperechoic strand of the Basset hound on the first examination; whereas, on re-examination 5 months later, this was not found. Other abnormalities, such as retinal detachment, endophthalmitis, vitreous hemorrhage, microphthalmia, and posterior neoplasia could be excluded.
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Early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV)
Graefe's Archive for Clinical and Experimental Ophthalmology, 1993Co-Authors: M. H. Boevé, F. C. Stades, G. F. J. M. Vrensen, B. L. J. C. Willekens, J. S. Linde-sipmanAbstract:This study provides scanning electron microscopic observations on the early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV) in canine fetuses at days 28 35 postcoitum (D28 and D35). From previous studies regarding PHTVL/PHPV it is known that a retrolental plaque of fibrovascular tissue is present in eyes of affected canine fetuses from the D33 stage. The contribution of vitreous cells to the formation of the plaque is supported by the results of this study. The lens capsules at the stages described were not found to contain abnormalities such as transparent (thinner) parts or rents, as have been described for postnatal cases of PHTVL/PHPV. These findings support the hypothesis that the capsular anomalies observed in postnatal patients are secondary entities.
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early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous phtvl phpv scanning electron microscopic observations
Graefes Archive for Clinical and Experimental Ophthalmology, 1993Co-Authors: M. H. Boevé, F. C. Stades, G. F. J. M. Vrensen, B. L. J. C. Willekens, J S Van Der LindesipmanAbstract:This study provides scanning electron microscopic observations on the early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV) in canine fetuses at days 28 35 postcoitum (D28 and D35). From previous studies regarding PHTVL/PHPV it is known that a retrolental plaque of fibrovascular tissue is present in eyes of affected canine fetuses from the D33 stage. The contribution of vitreous cells to the formation of the plaque is supported by the results of this study. The lens capsules at the stages described were not found to contain abnormalities such as transparent (thinner) parts or rents, as have been described for postnatal cases of PHTVL/PHPV. These findings support the hypothesis that the capsular anomalies observed in postnatal patients are secondary entities.
G. F. J. M. Vrensen - One of the best experts on this subject based on the ideXlab platform.
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Early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV)
Graefe's Archive for Clinical and Experimental Ophthalmology, 1993Co-Authors: M. H. Boevé, F. C. Stades, G. F. J. M. Vrensen, B. L. J. C. Willekens, J. S. Linde-sipmanAbstract:This study provides scanning electron microscopic observations on the early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV) in canine fetuses at days 28 35 postcoitum (D28 and D35). From previous studies regarding PHTVL/PHPV it is known that a retrolental plaque of fibrovascular tissue is present in eyes of affected canine fetuses from the D33 stage. The contribution of vitreous cells to the formation of the plaque is supported by the results of this study. The lens capsules at the stages described were not found to contain abnormalities such as transparent (thinner) parts or rents, as have been described for postnatal cases of PHTVL/PHPV. These findings support the hypothesis that the capsular anomalies observed in postnatal patients are secondary entities.
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Early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV). Scanning electron microscopic observations.
Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 1993Co-Authors: Michael H. Boevé, F. C. Stades, G. F. J. M. Vrensen, B. L. J. C. Willekens, Jantine S. Van Der Linde-sipmanAbstract:This study provides scanning electron microscopic observations on the early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV) in canine fetuses at days 28 35 postcoitum (D28 and D35). From previous studies regarding PHTVL/PHPV it is known that a retrolental plaque of fibrovascular tissue is present in eyes of affected canine fetuses from the D33 stage. The contribution of vitreous cells to the formation of the plaque is supported by the results of this study. The lens capsules at the stages described were not found to contain abnormalities such as transparent (thinner) parts or rents, as have been described for postnatal cases of PHTVL/PHPV. These findings support the hypothesis that the capsular anomalies observed in postnatal patients are secondary entities.
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early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous phtvl phpv scanning electron microscopic observations
Graefes Archive for Clinical and Experimental Ophthalmology, 1993Co-Authors: M. H. Boevé, F. C. Stades, G. F. J. M. Vrensen, B. L. J. C. Willekens, J S Van Der LindesipmanAbstract:This study provides scanning electron microscopic observations on the early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV) in canine fetuses at days 28 35 postcoitum (D28 and D35). From previous studies regarding PHTVL/PHPV it is known that a retrolental plaque of fibrovascular tissue is present in eyes of affected canine fetuses from the D33 stage. The contribution of vitreous cells to the formation of the plaque is supported by the results of this study. The lens capsules at the stages described were not found to contain abnormalities such as transparent (thinner) parts or rents, as have been described for postnatal cases of PHTVL/PHPV. These findings support the hypothesis that the capsular anomalies observed in postnatal patients are secondary entities.
B. L. J. C. Willekens - One of the best experts on this subject based on the ideXlab platform.
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Early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV)
Graefe's Archive for Clinical and Experimental Ophthalmology, 1993Co-Authors: M. H. Boevé, F. C. Stades, G. F. J. M. Vrensen, B. L. J. C. Willekens, J. S. Linde-sipmanAbstract:This study provides scanning electron microscopic observations on the early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV) in canine fetuses at days 28 35 postcoitum (D28 and D35). From previous studies regarding PHTVL/PHPV it is known that a retrolental plaque of fibrovascular tissue is present in eyes of affected canine fetuses from the D33 stage. The contribution of vitreous cells to the formation of the plaque is supported by the results of this study. The lens capsules at the stages described were not found to contain abnormalities such as transparent (thinner) parts or rents, as have been described for postnatal cases of PHTVL/PHPV. These findings support the hypothesis that the capsular anomalies observed in postnatal patients are secondary entities.
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Early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV). Scanning electron microscopic observations.
Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 1993Co-Authors: Michael H. Boevé, F. C. Stades, G. F. J. M. Vrensen, B. L. J. C. Willekens, Jantine S. Van Der Linde-sipmanAbstract:This study provides scanning electron microscopic observations on the early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV) in canine fetuses at days 28 35 postcoitum (D28 and D35). From previous studies regarding PHTVL/PHPV it is known that a retrolental plaque of fibrovascular tissue is present in eyes of affected canine fetuses from the D33 stage. The contribution of vitreous cells to the formation of the plaque is supported by the results of this study. The lens capsules at the stages described were not found to contain abnormalities such as transparent (thinner) parts or rents, as have been described for postnatal cases of PHTVL/PHPV. These findings support the hypothesis that the capsular anomalies observed in postnatal patients are secondary entities.
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early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous phtvl phpv scanning electron microscopic observations
Graefes Archive for Clinical and Experimental Ophthalmology, 1993Co-Authors: M. H. Boevé, F. C. Stades, G. F. J. M. Vrensen, B. L. J. C. Willekens, J S Van Der LindesipmanAbstract:This study provides scanning electron microscopic observations on the early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV) in canine fetuses at days 28 35 postcoitum (D28 and D35). From previous studies regarding PHTVL/PHPV it is known that a retrolental plaque of fibrovascular tissue is present in eyes of affected canine fetuses from the D33 stage. The contribution of vitreous cells to the formation of the plaque is supported by the results of this study. The lens capsules at the stages described were not found to contain abnormalities such as transparent (thinner) parts or rents, as have been described for postnatal cases of PHTVL/PHPV. These findings support the hypothesis that the capsular anomalies observed in postnatal patients are secondary entities.
J. S. Linde-sipman - One of the best experts on this subject based on the ideXlab platform.
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Early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV)
Graefe's Archive for Clinical and Experimental Ophthalmology, 1993Co-Authors: M. H. Boevé, F. C. Stades, G. F. J. M. Vrensen, B. L. J. C. Willekens, J. S. Linde-sipmanAbstract:This study provides scanning electron microscopic observations on the early morphogenesis of persistent hyperplastic Tunica Vasculosa Lentis and primary vitreous (PHTVL/PHPV) in canine fetuses at days 28 35 postcoitum (D28 and D35). From previous studies regarding PHTVL/PHPV it is known that a retrolental plaque of fibrovascular tissue is present in eyes of affected canine fetuses from the D33 stage. The contribution of vitreous cells to the formation of the plaque is supported by the results of this study. The lens capsules at the stages described were not found to contain abnormalities such as transparent (thinner) parts or rents, as have been described for postnatal cases of PHTVL/PHPV. These findings support the hypothesis that the capsular anomalies observed in postnatal patients are secondary entities.
