On Pigment-Flakes, Pigmentary Particles, and Pigment-Scales
نویسندگان
چکیده
منابع مشابه
Pigment dispersion syndrome and pigmentary glaucoma.
The pigment dispersion syndrome is a relatively uncommon condition, occurring as a result of pigment loss from the posterior-pigmented epithelium of the iris, with subsequent redeposition of the pigment throughout the anterior chamber. Obstruction of the trabecular meshwork occasionally leads to pigmentary glaucoma, with increased intraocular pressure, optic nerve head changes, and visual field...
متن کاملUltrasound biomicroscopy in asymmetric pigment dispersion syndrome and pigmentary glaucoma.
OBJECTIVE To identify differences in anterior chamber anatomy among patients with asymmetric pigment dispersion syndrome and no other discernible cause for the asymmetry. METHODS Ultrasound biomicroscopy and A-scan biometry were performed on both eyes of 13 patients with asymmetric pigment dispersion syndrome without a known cause for asymmetric involvement. A radial perpendicular image in th...
متن کاملWing coloration and pigment gradients in scales of pierid butterflies.
Depending on the species, the individual scales of butterfly wings have a longitudinal gradient in structure and reflectance properties, as shown by scanning electron microscopy and microspectrophotometry. White scales of the male Small White, Pieris rapae crucivora, show a strong gradient in both the density in pigment granules and the reflectance. After pigment extraction by aqueous ammonia, ...
متن کاملPigment deposition on the central aspect of the posterior lens capsule in pigmentary dispersion.
We describe a case of an increasing pigmentary plaque on the posterior surface of the lens during follow-up of a case of pigment dispersion syndrome and suggest that this is a new sign of pigment dispersion.
متن کاملCommon sequence variants in the LOXL1 gene in pigment dispersion syndrome and pigmentary glaucoma
BACKGROUND Single nucleotide polymorphisms (SNPs) within the LOXL1 gene are associated with pseudoesfoliation syndrome and pseudoesfoliation glaucoma. The aim of our study is to investigate a potential involvement of LOXL1 gene in the pathogenesis of pigment dispersion syndrome (PDS) and pigmentary glaucoma (PG). METHODS A cohort of Caucasian origin of 84 unrelated and clinically well-charact...
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ژورنال
عنوان ژورنال: The Monthly Microscopical Journal
سال: 1875
ISSN: 2047-1491
DOI: 10.1111/j.1365-2818.1875.tb00835.x