retinoscopy

The retinoscopy mirror uses the illumination system of the retinoscopy mirror to illuminate the interior of the eyeball, and the light is reflected back from the retina. These reflected rays change after passing through the refractive component of the eyeball. The refractive state of the eyeball can be judged by checking the change of the reflected light. . The examiner sits at a distance of one meter and faces the patient. The patient wears an audition frame and places the center of the frame ring at the center of the pupil of the eye to be inspected. Basic Information Specialist Category: Ophthalmic Examination Category: Other Inspections Applicable gender: whether men and women apply fasting: not fasting Tips: Inappropriate people: patients with other eye diseases and inflammation. Normal value If the direction of the pupil reflection movement is the same as the rotation direction of the retinoscope, it is called the continuation, which is the imaginary image seen by the fundus image; if the movement direction of the two is reverse, the retina is the image of the fundus; if Those who do not see obvious movements in the pupil reflection are called immobile. Clinical significance Abnormal results: 1. Shearing Two light bands are seen in the pupil area, one is moving and the other is reversed, such as the scissors opening and closing, due to the lens tilt, corneal scar or irregular astigmatism. 2, spherical aberration and negative spherical aberration (caused by keratoconus). People who need to be examined for myopia or hyperopia and astigmatism. Precautions Contraindications before examination: In particular, attention should be paid to the presence or absence of corneal opacity, vitreous opacity, nystagmus, strabismus and amblyopia. Requirements for inspection: the inspection distance and the direction of the examinee are only. Inspection process Reconnaissance operation method: The inspector sits at a distance of one meter and faces the patient. The patient wears an audition frame, and the center of the frame ring is placed at the center of the pupil of the eye to be inspected. The other front is covered with a black piece, and the patient's eye is looking at the upper edge of the flat mirror on the retinoscope. Then, the light source is injected into the pupil area of ​​the patient, and the reflection of the pupil of the patient is splung from the back of the central hole of the retinoscope, and the retinoscope is rotated slightly and slowly up and down or left and right, and red-yellow or yellowish reflection is visible. Move in the pupil area. Not suitable for the crowd Inappropriate crowd: patients with other eye disease inflammation.