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Specifications
Through telescopic lens sheet barrel and the accurate slot in its front dispensing different lens sheet, and to simulate a variety of refractive state of the human eye. Together with optometry piece retinoscopy mirror for training optometrist teaching and students practice using.
The retinal images diopter adjustment range -5D+3D: The diopter scale as the standard error
Pupil sport: 3,5,7
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