Zero parallax visual axis glasses for corneal pre-marking
US10092450B2 · kind B2 · utility
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1References
15Claims
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Assignee
Inventor
Key dates
| Filing date | Nov 14, 2016 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Nov 14, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/145
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Zero parallax visual axis glasses for corneal pre-marking include a target light, an alignment light, a polarized lens and a short pass filter. In some embodiments the targeting light and/or alignment light are LEDs and/or configured to blink. In some embodiments the target light is red. In certain embodiments the alignment light is white. The polarized lens can be placed on a user's non-dominant eye and block light originating from the target light and/or alignment light. The short pass filter can be configured to allow light from the target light to only pass through in one direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.