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The first type of diagnostic procedure referred to as a ‘slit lamp examination’ of phacolytic glaucoma allows for specific identification of microcystic corneal edema and the presence of macrophages, white material (dotted with patches within the inside capsule of the lens) and intense flare and iridescent or hyper-refringent particles ...
On slit-lamp examination, conjunctival injections, epithelial corneal edema, [3] small to medium-sized fine keratitic precipitates, aqueous cells and flare may also be noted. [4] Blurring of vision, eye pain and discomfort are the main symptoms. [4] Colored halos may occur due to elevated IOP. [5]
Eye examination with the aid of a slit lamp. Side view of a slit lamp machine. Cataract in human eye: magnified view seen on examination with the slit lamp. In ophthalmology and optometry, a slit lamp is an instrument consisting of a high-intensity light source that can be focused to shine a thin sheet of light into the eye.
With acute angle-closure glaucoma, the pupil is generally fixed in mid-position, oval, and responds sluggishly to light, if at all. Shallow anterior chamber depth may indicate a predisposition to one form of glaucoma (narrow angle) but requires slit-lamp examination or other special techniques to determine
In ophthalmology, gonioscopy is a routine procedure that measures the angle between the iris and the cornea (the iridocorneal angle), using a goniolens (also known as a gonioscope) together with a slit lamp or operating microscope. [1] [2] Its use is important in diagnosing and monitoring various eye conditions associated with glaucoma.
It is a characterized by a breakdown or damage of the epithelium of the cornea in a pinpoint pattern, which can be seen with examination with a slit-lamp. Patients may present with non-specific symptoms such as red eye, tearing, foreign body sensation, photophobia and burning.
Many cases are asymptomatic, however patients many have decreased vision, glare, monocular diplopia or polyopia, and noticeable iris changes. [2] [5] On exam patients have normal to decreased visual acuity, and a "beaten metal appearance" of the corneal endothelium, corneal edema, increased intraocular pressure, peripheral anterior synechiae, and iris changes.
The method involves a narrow slit of light from a slit lamp being projected onto the peripheral cornea at an angle of 60⁰ as near as possible to the limbus. The resulting image is a slit that is projected onto the surface of the cornea, the width is then used as a reference for the grading of the angle.