Moshe Lahav

Learn More
We designed the present study to examine the cross-sectional relation between age-related lens opacities and vitamin C supplement use over a 10-12-y period before assessment of lens status in women without diagnosed cataract or diabetes. This design avoids biased measurement of nutrient intake that results when knowledge of lens opacities influences(More)
Tumors of sweat gland origin are not uncommon in the periocular region. These tumors frequently pose diagnostic difficulty due to the wide range of histopathological patterns, and to the fact that they may be infiltrative or have metastatic potential despite their relatively benign appearance. This report discusses the classification and diagnosis of five(More)
Histopathologic examination of six, adult human eyes revealed “rosettelike” structures in the retina which appear to have developed after maturation of the retina. These structures resemble dysplastic rosettes which are generally interpreted as a sign of maldevelopment of the retina (retinal dysplasia). The underlying lesions in the eyes of these patients(More)
A 56-year-old woman presented with orbital signs and symptoms suggestive of lacrimal gland tumor. An excised biopsy specimen was obtained and showed glandular tissue, which could be confused with lacrimal gland acini. Closer microscopic examination and immunohistochemical studies revealed a metastatic tumor of thyroid gland origin. Initially, there was no(More)
Corneal keloids, elevated corneal scars that protrude beyond the original site of injury, were found in nine globes enucleated from young African patients with the diagnosis of anterior staphyloma. All the cases showed evidence of previous corneal perforation and protuberant hypertrophic scar of the anterior corneal stroma. Corneal keloids may be more(More)
Two patients are described in whom black hypopyon and black keratic precipitates occurred as a result of intraocular melanoma. In one instance the hypopyon was due to a clinically unsuspected primary choroidal melanoma in an eye with opaque media; in the second case the tumor was metastatic to the uvea from a cutaneous melanoma. Histological examination(More)
Clinical observation of corneal grafts often reveals subepithelial whitish opacities or membranes. To further understand this phenomenon, we undertook a histopathologic study of the changes in this region in failed human corneal grafts. Thinning and thickening of the epithelium, breaks in Bowman's membrane, and growth of subepithelial fibrous tissue were(More)
A rare metastatic choroidal tumor from primary mediastinal choriocarcinoma in a male is described. This tumor secreted gonadotrophins and showed the histopathologic characteristics of cytotrophoblast and syncytiotrophoblast cells. Early metastatic disease resulted in rapid death; the development of the choroidal metastatic lesion was diagnosed at autopsy.
A series of 18 epibulbar tumors are reported from Lesotho, a nontropical African country. The etiologic risk factors in epibulbar tumors are evaluated in terms of the environmental conditions present in Lesotho. The pathogenesis of epibulbar tumors is discussed in terms of histological progression from benign to malignant lesions following prolonged(More)
  • 1