Method and device for testing eyes
US5914772A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 9, 1997 |
| Grant date | Jun 22, 1999 |
| Priority date | — |
| Expiry date | Dec 9, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/028
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to a device and methods for testing eyes. This method is objective in nature and can be performed by a technician, only requiring specialized personal to interpret the final prescription. The method comprises: Obtaining autorefractor, corrected autorefractor, and autolensometer results; Calculating sphere; Performing a Red-Green test; Calculating cylinder and axis; Determining minimum cylinder power; Determining final sphere; and Recording all data, wherein the steps of calculating sphere and calculating cylinder and axis do not rely upon subjective interpretation of responses made by the subject in order to complete the method. Furthermore, this method is capable of being fully processed by a computer so that a printout is produced that is suitable for interpretation by a refractionist.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.