A61B 3/028
For testing visual acuity
Official title: for testing visual acuity; for determination of refraction, e.g. phoropters
A61B3/028 (For testing visual acuity) appears on 1,442 US grants and 1,663 published applications in this corpus.
Search patents in A61B- Granted patents
- 1,442
- Published applications
- 1,663
- Assignees
- 636
- Inventors
- 2,333
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 11 | 0 |
| 1984 | 7 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 11 | 0 |
| 1990 | 6 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 10 | 0 |
| 1994 | 8 | 0 |
| 1995 | 14 | 0 |
| 1996 | 12 | 0 |
| 1997 | 14 | 0 |
| 1998 | 16 | 0 |
| 1999 | 25 | 0 |
| 2000 | 17 | 0 |
| 2001 | 14 | 6 |
| 2002 | 19 | 14 |
| 2003 | 20 | 20 |
| 2004 | 12 | 34 |
| 2005 | 8 | 32 |
| 2006 | 9 | 24 |
| 2007 | 29 | 27 |
| 2008 | 34 | 41 |
| 2009 | 22 | 41 |
| 2010 | 36 | 31 |
| 2011 | 37 | 44 |
| 2012 | 23 | 43 |
| 2013 | 33 | 41 |
| 2014 | 42 | 51 |
| 2015 | 37 | 73 |
| 2016 | 59 | 71 |
| 2017 | 64 | 131 |
| 2018 | 50 | 72 |
| 2019 | 118 | 94 |
| 2020 | 92 | 111 |
| 2021 | 70 | 101 |
| 2022 | 89 | 129 |
| 2023 | 71 | 124 |
| 2024 | 76 | 85 |
| 2025 | 102 | 97 |
| 2026 | 65 | 126 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Eye tracking color vision tests6 Oct 2026US 12,751,612 B2Verily Health Inc.
- Apparatus and method for measuring visual acuity by using focus-tunable lens6 Oct 2026US 12,754,350 B2Samsung Electronics Co., Ltd.
- Light field processor system29 Sep 2026US 12,748,322 B2Magic Leap, Inc.
- Methods of automated determination of parameters for vision correction25 Aug 2026US 12,714,300 B2WaveFront Dynamics, Inc.
- Electrode system for vision treatment and method25 Aug 2026US 12,714,302 B2i-Lumen Scientific, Inc.
- Vision testing device1 Oct 2026US 2026/0294231 A1Fim Medical
- Systems and methods for testing and/or monitoring vision1 Oct 2026US 2026/0294233 A1Tilak Healthcare
- Method for measuring behavioral pattern during gaze shifting, method for determining progressive power lens, and device for measuring behavioral pattern during gaze shifting24 Sep 2026US 2026/0283462 A1Hoya Lens Thailand Ltd.
- Optometry device for testing the eyes of an individual, associated method and computer program product17 Sep 2026US 2026/0272281 A1Essilor International
- Vision Testing Device with Interchangeable Lens Assembly Modules17 Sep 2026US 2026/0272296 A1Radius XR, LLC
Most cited
By later US patents
- Virtual medical instrument for performing medical diagnostic testing on patients296US 5,623,925 ACMeD, Inc. · 1997
- Optical lens system with electro-active lens having alterably different focal lengths247US 6,619,799 B1E-Vision, LLC · 2003
- Method for refracting and dispensing electro-active spectacles159US 6,491,394 B1E-Vision, LLC · 2002
- Virtual medical instrument for performing medical diagnostic testing on patients157US 5,961,448 ACMeD, Inc. · 1999
- Vision testing system for testing the sight function of a patient149US 5,331,358 ACarl-Zeiss-Stiftung · 1994