Design and Research of Handheld Automatic Refractor
The existing refractors are mainly fixed devices, and require different degrees of cooperation during the refraction process, which takes a long time and is relatively easy for adults, but it is difficult for preschoolers and people with difficulties in cooperation. Optometry. In this paper, by desi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2021-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/28/e3sconf_pgsge2021_02006.pdf |