Eye exercising devices
US4838677A · kind A · utility
11Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1987 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Apr 6, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H5/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An eye exercising device is disclosed having a positioning product to position the eye along an optical axis, which defines a range of accommodation for the eye. The range of accommodation is bounded by a proximal and a distal limit. An object is movable along the optical path and a displacement device is provided to displace continuously the object along the optical path from a first location on one side of a given one of the limits to a second location on another side of the given limit opposite the first location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.