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3岁前的幼儿理解力差,又不很合作,其验光只能采用客观验光;3岁以上的儿童理解力较强且能合作,就能采用客观验光及辅以主观验光。 检影验光又称视网膜检影法(retinoscopy),是由法国眼科医师Cuignet于1873年所倡导而后被广泛应用,其英文术语英国等国家多采用retinoscopy。美国有关文献中多用skiascopy与skiametry,又称为umbrascopy。 检影法是利用检影镜照亮视网膜面并使移动,检查者观察瞳孔区内影光的形态与运动,然后在试镜架上加透镜使影光运动达到中和点,测定出该眼的屈光状态及屈光度。
Children 3 years old before comprehension is poor, not very cooperative, the optometry can only use objective refraction; children over the age of 3 strong and can cooperate, you can use objective refraction and subjective refraction. Retinal optometry, also known as retinoscopy (retinoscopy), by the French ophthalmologist Cuignet advocated in 1873 and was widely used, the English terms such as Britain and other countries using retinoscopy. Multi-purpose skiascopy and skiametry in the United States, also known as umbrascopy. Retinoscopy method is the use of retinoscope retinoscopy surface and make the move, the examiner to observe the shape and movement of the pupil light shadow, and then add a lens on the audition frame so that the light movement to reach the neutral point, measured the eye Refractive status and refraction.