检影验光1（1 dioptoscopy）.doc

检影验光1（1 dioptoscopy） The advantages of retinoscopy: 1 is a reliable method of objective refraction. Can check out the refractive status of patients with objective. Is not affected by the subjective error with knowledge, dont ask patients can be detected accurately in patients with ametropia. 2 the instruments used are only retinoscope, equipment is simple, cheap and practical. 3 of the poor cooperation of infant retinoscopy optometry, is the best choice. 4 difficult photometric optometry, such as irregular astigmatism, amblyopia, nystagmus, cataract, and retarded. Easy operation with retinoscopy, and the results are reliable. The difficulty of retinoscopy: And find 1 retinoscopy, retina and retinal is an optometrist in patients with retinoscopy hole on the conjugate point. In order to achieve this point of neutralization, including digestion spectrophotometry with lenses, patients with ametropia, patients lead to refractive change optometrist, ametropia, optometrist adjustment device. Only after the exclusion of three patients with ametropia, is. First, eliminate the patient required in regulation retinoscopy before method is at 5 meters beyond cycloplegia or patients as the standard, relaxation regulation. Secondly, the necessary correction of ametropia optometrist, even if only 0.5 degrees. Then, an optometrist to relax regulation in retinoscopy when necessary. Retinoscopy under the microscope image is not reflected, but the retina, in the regulation of relaxation can identify cis inverse dynamic. Beginner to master. For a long time training, can be handy. 2 we hope the detection of patients with foveal luminosity is the refractive status. But it is not easy to do skiascopy. Because we want to see in the shadow, reflected light of the fovea, must make a projection beam and retinoscopy eyes Los coincidence, is that patients at skiascope source, this cannot be observed reflecting light shadow moving. The reason: because the patient is afraid of light and avoid inter