Uveal melanosomes from the iridal stroma contain both eumelanin and pheomelanin, the ratio of which varies with iris color. Herein, we report the absorption coefficient at lambda = 244 nm for individual human iridal stroma melanosomes from dark brown and blue-green irides. The melanosomes are nearly identical in size, but differ in the relative concentration composition, ranging from a eumelani...

It is well recognized that typical colobomata of the uveal tract may show a strong hereditary tendency and that the transmission is usually dominant (Kelecom, I967). Associated with such colobomata there may be other ocular anomalies, such as microcornea (Srivastava, I96I; Batra and Paul, I967), microphthalmos (Petrovic-Ducic, I959; Duggan and Hassard, I96I; Zeiter, i963), aniridia (Lewallen, I...

Leiomyoma is a rare tumor arising from the uveal tract. Fundoscopically, it appears as a yellowish-white, elevated mass and cannot be readily distinguished from melanoma or other uveal tumors. Cross-sectional imaging may have an important role, particularly when the opaque ocular media or a vitreous hemorrhage precludes a clear ophthalmoscopic view. In this respect, radiologists should be aware...

The classification of the carabid subtribe Tachyina (Trechitae: Bembidiini) is reviewed in light of newly discovered diversity from Central and South America. Described herein are three new genera (Tachyxystagen. n., Stigmatachysgen. n., Nothoderisgen. n.), two new subgenera of Meotachys (Scolistichussubgen. n., Hylotachyssubgen. n.), and two new subgenera of Elaphropus (Ammotachyssubgen. n., I...

Intranuclear cytoplasmic inclusions have been described previously in both human and animal tissue. So far as we are aware they are described in detail for the first time in this paper in 60 cases of malignant melanoma of the iris, usually in spindle cells. The light microscopic appearances are described, and electron microscopic studies of selected cases show clearly the genesis of these inclu...

Angiotensin binding sites in membrane homogenates of rabbit iris/ciliary body and human nonpigmented ciliary epithelial (NPE) cells grown in culture were characterized using radioligand binding assays with (125I)-sarcosine1-isoleucine8-angiotensin II [(125I)-SARILE]. Scatchard analysis of the binding of (125I)-SARILE yielded linear plots with a Kd value of 0.55 +/- 0.1 nM and a Bmax of 98 +/- 2...

All of these eyes were eviscerated under general anesthesia using an evisceration spoon to separate the uveal tissue from the scleral shell. The delivery of the globe contents was assisted by suction machine. In the cases that followed, removal of contents was facilitated by injecting saline in the suprachoroidal space using a blunt cannula to induce choroidal detachment The inside of the globe...

CORECTOPIA is usually bilateral and symmetrical, the direction of the displacement being up and out (Duke-Elder, 1938). Unilateral cases are rare (Wilde, 1862; van Duyse, 1895). Ectopia lentis is a usual accompaniment, and other anomalies of uveal tissue may co-exist. This condition has a hereditary tendency as a recessive characteristic. Some of the cases reported have shown evidence of intra-...

RESULTS. In normal eyes, labeling for aB-crystallin occurred in the subendothelial region of Schlemm's canal and outer corneoscleral regions, whereas TIGR labeling was found in the inner uveal meshwork region and the anterior portion of the meshwork. In contrast, in many glaucomatous eyes, labeling for aB-crystallin and TIGR occurred in more regions of the meshwork and appeared more intense tha...

uveal tissue lying free in the FIG. 2.-Localization of magnetic air-gun shot in left eye. lower conjunctival fornix. No view could be obtained of the fundus. The tension was soft and there was no perception of light (Fig. 1). X-ray Localization.-A round foreign body 5 x 5 x 5 mm. was lying 1 mm. above the horizontal plane of the cornea, 21 * 5 mm. back from the centre of the cornea, and I 5 mm....