iris examination

The iris, part of the eye structure, has a circular opening in the center of the iris called the pupil, which is like a resizable aperture in the camera. The pigmentation determines the color of the eye. Check the iris to use the concentrating method and add a magnifying glass. Pay attention to the color of the iris, with or without pigmentation (pigmentation) or pigmentation (iris atrophy). When there is inflammation in the iris, it can often become darker due to iris congestion. However, in the case of iris heterochromic ciliary body inflammation, the iris of the affected side becomes lighter, and the contrast of the two sides must be made. Basic Information Specialist Category: Ophthalmic Examination Category: Other Inspections Applicable gender: whether men and women apply fasting: not fasting Reminder: Patients with changes in scars or atrophy without a burr edge should not do this check. Normal value Normally, the texture of the iris tissue should be extremely clear, but in the case of inflammation, it may be sludge-like due to swelling and congestion. Under normal circumstances, the iris blood vessels are generally not visible, but when the iris is atrophied, in addition to loose tissue, In addition to the unclear texture, the original blood vessels on the iris can be exposed. In the long-term diabetic patients and the eyes with the central retinal vein occlusion for several months, clear neovascularization is often seen on the iris, and the iris is red, called ruby ​​iris. (rubeosisiridis), the blood vessels are roughly curved and expanded, showing dendritic branches. Clinical significance Abnormal results are often found in the iris inflammatory nodules or non-inflammatory cysts or tumors, the location and number of uncertain. Should also pay attention to the presence or absence of congenital anomalies, such as no iris, iris defect, residual pupillary membrane. Should also check whether the pupil edge of the iris is neat, if there is a slight irregularity or iris pigment valgus, it should be back to check the iris of the control area to see if the pupil edge tear or atrophy changes. Patients with inflammatory nodules or non-inflammatory cysts or tumors, as well as patients with iritis, who need to be examined. Precautions Forbidden before the examination: Indiscriminately, the doctor is asked to medicate, and the action is rude. Requirements for inspection: The patient fixes his or her head. Inspection process Check the iris to use the concentrating method and add a magnifying glass. Pay attention to the color of the iris, with or without pigmentation (pigmentation) or pigmentation (iris atrophy). When there is inflammation in the iris, it can often become darker due to iris congestion. However, in the case of iris heterochromic ciliary body inflammation, the iris of the affected side becomes lighter, and the contrast of the two sides must be made. Not suitable for the crowd Inappropriate population: patients with no changes in the burr scar or atrophy.