Ophthalmologic device for accurately positioning a contact lens to an eye
US5686981A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1995 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Oct 20, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/135
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device of the present invention includes: apparatus for photographing an anterior eye segment of a subject; a first display device for displaying an image of the anterior eye segment; a device for processing the displayed image to detect the relative positions of a pupil and a contact lens, respectively; a calculating apparatus for obtaining the relationship of relative positions between them by calculating; and a second display device for displaying the obtained relationship of the relative positions. The described arrangement is particularly useful for inspecting a condition for the putting on of the contact lens by measuring the relationship of the relative positions between the contact lens at the time of being put on and the pupil of the concerned eye segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.