double vision test

Double visual inspection, this method is suitable for paralytic strabismus. When examining the oblique angle for the patient, first check the first oblique angle and then the second oblique angle. This type of examination requires the patient to have a normal retinal correspondence. 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 When a small red light on the screen is lit, let the patient put a green spot on the screen. When the patient thinks that the green spot is coincident with the small red light, record the position of the green spot, so that the check is repeated in turn, and the center is 9 small red. The lights are illuminated separately, and the positions of the green spots are connected by straight lines. Clinical significance Abnormal results False strabismus and Kappa angles often give the appearance of strabismus, allowing inexperienced people to make erroneous judgments. Most patients with pseudostrabismus have a wide nasal bridge and are often accompanied by internal ecdysis. Because the inner suede covers the sclera, it seems that the eyeball is in the inner rotation position, which is mistaken for the eye position to be skewed. The occlusion method can prove the positive position of both eyes. Need to check the crowd strabismus. Precautions Forbidden before examination: the retina is blurred. Requirements for inspection: cooperate with a doctor. Inspection process At the beginning of the inspection, the red eye was worn on the right eye. The examiner used the projector to project a red light bar upwards, allowing the patient to project a green light on the screen with his own projector, and asked the patient to subjectively combine the two lights together. The relative positions of the two-color strips are recorded, so that the examination is repeated on each diagnostic eye position, and then the left and right eyes are exchanged for the red-green ophthalmic lens, and the examination is repeated once again to obtain the eye positions when the two eyes are separately watched. Not suitable for the crowd Inappropriate population: not a patient with paralytic strabismus.