perimeter examination

The perimetry check provides a diagnostic basis for eye diseases such as glaucoma in order to understand the change in visual field. Includes perimeter and central visual inspection. The ankle of the examinee is fixed to the lower jaw of the perimeter. When the right eye is examined, the right eye must be placed at the center of the perimeter of the perimeter to cover the left eye. The examiner slowly moves the optotype along the perimeter from the perimeter to the center. When the subject sees the optotype, the degree is recorded on the graph. Basic Information Specialist Category: Ophthalmic Examination Category: Applicable gender: whether men and women apply fasting: not fasting Tips: Maintain a normal diet and schedule. Normal value 1. Judgment of Peripheral Field of View The normal field of view range is 55° above the nose and 60° on the nose, 70° below, and 90° on the temporal side. Blue, red, and green are successively decremented by about 10°. 2. The judgment of the central visual field except for the elliptical physiological blind spot between 15 and 20 degrees on the temporal side of the gaze eye, and any dark spots appearing in other parts are pathological dark spots. Clinical significance Abnormal results: blue, red, and green are decremented by about 10°. Any dark spots in other parts are pathological dark spots. Need to check patients with glaucoma. Precautions Taboo before the check: emotional riots. Requirements for inspection: The examiner cooperates with the doctor. Inspection process Peripheral field of view detection method: (1) The crotch of the inspected person is fixed on the lower eyelid of the periscope. When the right eye is inspected, the right eye must be placed at the center of the perimetry white gaze to cover the left eye. (2) The examiner slowly moves the optotype along the perimeter from the perimeter to the center. When the subject sees the optotype, the degree is recorded on the graph. (3) Measure each warp degree in the same way. Finally, connecting the meridian points is the field of view of the eye. Not suitable for the crowd Inappropriate people: patients with cardiovascular and cerebrovascular diseases.