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Refraction testing is the main method for identifying refractive errors and occupies a significant amount of work in clinical practice. The traditional method of retinoscopy has been time-consuming and labor-intensive, and difficult to master. After the 1970s, new automatic refractors emerged, utilizing infrared, electronic, and computational technologies to examine the convergence of light after it enters the eye.


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Refraction testing is the main method for identifying refractive errors and occupies a significant amount of work in clinical practice. The traditional method of retinoscopy has been time-consuming and labor-intensive, and difficult to master. After the 1970s, new automatic refractors emerged, utilizing infrared, electronic, and computational technologies to examine the convergence of light after it enters the eye.


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