Ads
related to: weiss ring ophthalmology
Search results
Results from the WOW.Com Content Network
Weiss ring: a large, ring shaped floater that is sometimes seen if the vitreous body releases from the back of the eye. When this occurs there is a characteristic pattern of symptoms: Flashes of light ; A sudden dramatic increase in the number of floaters; A ring of floaters or hairs just to the temporal side of the central vision
Weiss ring: a large, ring shaped floater that is sometimes seen if the vitreous body releases from the back of the eye. As part of the normal human aging process the liquefied vitreous body loses support and contracts. This leads to posterior vitreous detachment in which the vitreous membrane is released from the sensory retina. [9]
Abbreviation Term Description (notes) AC: Anterior chamber: fluid-filled space between the iris and the endothelium: AC 4/4: Grade 4 anterior chamber angle: open angle between cornea and iris
There are two techniques used to assess the red reflex listed below. Both are noninvasive, inexpensive, and quick. Dilation of the eyes is unnecessary and not recommended due to the theoretical but rarely seen risks of sympathomimetics and antimuscarinic systemic effects – tachycardia (fast heart rate), hypertension (high blood pressure), and arrhythmia (abnormal heart rhythm).
Vossius ring (also called Vossius's ring or Vossius' ring) is due to blunt trauma to the eye.When the eye is injured, a circular ring of fainted or stippled opacity is seen on the anterior surface of the lens due to brown amorphous granules of pigment lying on the capsule.
CorT utilizes data from all Placido rings across the cornea compared with SimK, which is based on only one ring. [ 9 ] [ 10 ] While corneal topography relies on reflected light from the front (anterior) of the cornea, a technique called corneal tomography also provides a measure of the back (posterior) shape of the cornea.
Ads
related to: weiss ring ophthalmology