NZ705244A - A lens design and method for preventing or slowing the progression of myopia - Google Patents
A lens design and method for preventing or slowing the progression of myopiaInfo
- Publication number
- NZ705244A NZ705244A NZ705244A NZ70524409A NZ705244A NZ 705244 A NZ705244 A NZ 705244A NZ 705244 A NZ705244 A NZ 705244A NZ 70524409 A NZ70524409 A NZ 70524409A NZ 705244 A NZ705244 A NZ 705244A
- Authority
- NZ
- New Zealand
- Prior art keywords
- power
- plus
- positive
- radial distance
- axis
- Prior art date
Links
Abstract
A lens 1 for preventing myopia or reducing the progression of myopia, the lens comprising an optical portion 10 extending outwardly from a lens center to an outer periphery of the optical portion 10, the optical portion 10 having a central vision region 40 and a peripheral region, and a carrier portion 20 connected to the outer periphery of the optical portion 10 by a blending zone 30 of the carrier portion 20, the carrier portion 20 extending outwardly from the outer periphery of the optical portion 10 to an outer periphery of the carrier portion 20. The lens has a power profile that creates on-axis and off-axis myopic defocus to reduce or remove on-axis and off-axis defocus created by optics in the eye of a person wearing the lens, the profile creating the on-axis and off-axis defocus by providing an increase in positive (Plus) power for light rays passing through the central vision and peripheral regions of the optical portion. The power profile has a first increase in positive (plus) power that ranges from a minimum first positive (plus) power of about 0.5 diopters to a maximum first positive (plus) power of about 1.5 diopters over a radial distance from the lens center ranging from a first radial distance of about 1.5 mm to a second radial distance of about 3.0 mm. The power profile has a second minimum increase in positive (plus) power that is equal to the first maximum positive (plus) power at the second radial distance, and a second maximum increase in positive (plus) power that is at least 0.5 diopters greater than the first maximum positive (plus) power at a third radial distance, where the third radial distance is at least 0.5 mm greater than the second radial distance.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8779508P | 2008-08-11 | 2008-08-11 | |
| NZ61305609 | 2009-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NZ705244A true NZ705244A (en) | 2016-07-29 |
Family
ID=56506513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NZ705244A NZ705244A (en) | 2008-08-11 | 2009-07-31 | A lens design and method for preventing or slowing the progression of myopia |
Country Status (1)
| Country | Link |
|---|---|
| NZ (1) | NZ705244A (en) |
-
2009
- 2009-07-31 NZ NZ705244A patent/NZ705244A/en not_active IP Right Cessation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PSEA | Patent sealed | ||
| RENW | Renewal (renewal fees accepted) |
Free format text: PATENT RENEWED FOR 6 YEARS UNTIL 31 JUL 2019 BY BALDWINS INTELLECTUAL PROPERTY Effective date: 20161102 |
|
| RENW | Renewal (renewal fees accepted) |
Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 31 JUL 2020 BY CPA GLOBAL Effective date: 20190620 |
|
| ASS | Change of ownership |
Owner name: ALCON INC., CH Effective date: 20191212 |
|
| LAPS | Patent lapsed |