Method and system for dynamically measuring tear film breakup and irregularity using corneal topography and wavefront aberrometry
US10631724B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2018 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Apr 15, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/103
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An optical measurement instrument performs a series of wavefront measurements to obtain a plurality of sets of wavefront aberrometry data for an eye, and performs a series of corneal topography measurements to obtain a plurality of sets of corneal topography data for the eye. Each set of wavefront aberrometry data is obtained at a corresponding different point in time, and each set of corneal topography data is obtained at a corresponding different point in time. The wavefront aberrometry data and the corneal topography data are processed to produce combined tear film breakup data as a function of time. The combined tear film breakup data may be employed as a metric for evaluating a level of tear film breakup of the eye as a function of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.