single vision test

In the single visual inspection method, two eyes simultaneously observe one visual target, so that the patient produces double vision, and the eye position is judged according to the position change of the multiple vision. Basic Information Specialist Category: Ophthalmic Examination Category: Other Inspections Applicable gender: whether men and women apply fasting: not fasting Tips: The patient should look at the light spot before the examination. Normal value If the vertical light points the light source, it indicates that the patient's eyes are in the right position; if the point light source. If the vertical light passes through the point source, the patient's eyes are in the right position; if the point source is on the left side of the vertical light (the same side double vision), the patient is suffering from exotropia if the point source is on the right side of the vertical light (crossover) , indicating that the patient has external strabismus. Clinical significance Abnormal results If you look at the direction of the front of the Markov rod mirror, keep the horizontal level, just rotate the Markov rod in front of the paralyzed eye, then the direction of rotation of the Markov rod is the direction of the squint. Need to check the crowd of people with paralytic strabismus. Precautions Contraindications before inspection: The glasses are skewed from the static direction. Requirements for inspection: The patient looks at the light spot in front. Inspection process Putting the red filter in front of the right eye, the patient sees a point source as two point sources, red and white, producing a double vision. Adding a prism (horizontal or vertical) in front of the patient's eyes causes the two objects to overlap. At this time, the degree of the prism added to the front of the eye is the degree of strabismus of the patient. Not suitable for the crowd Inappropriate crowd: not a paralyzed strabismus population.