Search results
Results From The WOW.Com Content Network
An iridesis is a surgical procedure in which a portion of the iris is brought through and incarcerated in a corneal incision in order to reposition the pupil. [33] [41] An iridocorneosclerectomy is the surgical removal of a portion of the iris, the cornea, and the sclera. [33] An iridocyclectomy is the surgical removal of the iris and the ...
It is usually associated with disease processes in the retina, which involve the retina becoming starved of oxygen ().The ischemic retina releases a variety of factors, the most important of which is vascular endothelial growth factor (VEGF).
Iridescence in soap bubbles. Iridescence (also known as goniochromism) is the phenomenon of certain surfaces that appear gradually to change colour as the angle of view or the angle of illumination changes.
The iris consists of two layers: the front pigmented fibrovascular layer known as a stroma and, behind the stroma, pigmented epithelial cells.. The stroma is connected to a sphincter muscle (sphincter pupillae), which contracts the pupil in a circular motion, and a set of dilator muscles (dilator pupillae), which pull the iris radially to enlarge the pupil, pulling it in folds.
Iridodialyses are usually caused by blunt trauma to the eye, [2] but may also be caused by penetrating eye injuries. [7] An iridodialysis may be an iatrogenic complication of any intraocular surgery [10] [11] [12] and at one time they were created intentionally as part of intracapsular cataract extraction. [13]
An antiphogistic iridectomy is the surgical removal of part of the iris to reduce intraocular pressure in inflammatory conditions of the eye. [2]A basal iridectomy is an iridectomy which includes the root of the iris.
Iridodonesis (/ ˌ aɪər ɪ d oʊ d oʊ ˈ n iː s ɪ s /) is the vibration or agitated motion of the iris with eye movement. [1] This may be caused by lens subluxation, [2] the incomplete or partial dislocation of the lens; or by aphakia, the absence of a lens.
Iridology (also known as iridodiagnosis [1] or iridiagnosis [2]) is an alternative medicine technique whose proponents claim that patterns, colors, and other characteristics of the iris can be examined to determine information about a patient's systemic health.