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The optometry method is a kind of iris examination method. Inflammatory nodules or non-inflammatory cysts or tumors are often found on the iris, and a magnifying glass is also checked. Basic Information Specialist Category: Ophthalmic Examination Category: Other Inspections Applicable gender: whether men and women apply fasting: not fasting Tips: cooperate with the doctor. 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 shrinks, the tissue is loose. If the texture is unclear, the original blood vessels on the iris can be exposed. Clinical significance Abnormal results should 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 is often darkened by the congestion of the iris, but in the case of iris heterochromic ciliary body inflammation, the iris of the affected side becomes lighter. Patients with iris color variations need to be examined. Precautions Contraindications before examination: abnormal iris should be checked in time for regular hospitals. Requirements for inspection: cooperate with the doctor. Inspection process Check the iris for tremor. Make the patient fix his head. Use a thumb and forefinger to split the split. Then turn the patient's eyeball up, down, left, and right. Then look straight ahead. At this time, watch carefully. There is no tremor in the iris; mild tremors must be seen under a magnifying glass or slit lamp. Not suitable for the crowd Inappropriate crowd: general inspection, no special mention.