GB2365993A - Light reducing contact lens - Google Patents

Abstract

Contact lenses with light reduction and protection properties which can protect the iris of the eye from the excessive effects of light particularly UV (ultra violet) rays. The lenses can also be prescription correction lenses and photochromic. The lenses can cover the entire pupil of the eye under all conceivable light conditions and intended to replace the need to wear sunglasses.

Description

<Desc/Clms Page number 1> CONTACT LENSES OPTION 3 The invention relates to contact lenses. The invention is Sunglass Contact Lenses, contact lenses that act as "Sunglasses" ensure that the wearer receives all the vision benefits that Sunglasses can provide through darkened or polarised contact lenses that protect the eyes from the glare of light, removing the need to wear Sunglasses. When a person who wears contact lenses, requires vision protection and comfort from light they have to either use a pair of sunglasses in conjunction with their contact lenses (non prescription sunglasses) or instead of their contact lenses (prescription sunglasses). By incorporating light reduction and protection properties as an integral part of their contact lenses, the wearer of contact lenses has a third option. They can change their lenses when they require their vision to have protection and comfort from light, by removing their normal lenses and putting on a pair of "Sunglass Contact Lenses". This third option would also be available to people who have no sight problems but still require their vision to have protection and comfort from light, without wanting to wear sunglasses, by the wearing of non- prescription "Sunglass Contact Lenses". The light reduction and protection properties would either cover the entire lens or just the central portion (circular in shape). The entire lens option would give protection to the iris as well as the pupil of the eye, but would alter the colour of the iris, to those looking at the wearer's eyes. If the central portion option is chosen then the diameter of the central portion should be sufficient to cover the entire pupil of the eye, under all conceivable light conditions. The "Sunglass Contact Lenses" would be produced by utilising the technologies used to produce coloured and tinted contact lenses in conjunction with light reduction and light spectrum restriction technologies used for Sunglasses. The colour or tint combined with light reduction and protection properties would be incorporated throughout contact lens or specifically across the pupil of the eye portion of the contact lens. "Sunglass Contact Lenses" would be available form one to all contact lens formats including hard, soft, gas permeable and disposable.

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Claims (5)

1. CLAIMS 1. The incorporation of light reduction and protection properties as an integral part of a Contact lens.
2. 2. As claimed in 1, Contact Lenses that protects the pupil or the pupil and the iris of the eye from the excessive effects of light.
3. 3. As claimed in 2, Contact Lenses that incorporate the advantages of Sunglasses including UV protect and the reduction of light intensity without the need to wear Sunglasses.
4. 4. As claimed in 3, Use of existing technologies to ensure that if required the lenses could be sensitive to the level of light and adjust the amount of light absorbed accordingly. Working as normal lenses, without a noticeable Sunglass effect, when light levels are low.
5. 5. As claimed in 4, Use of prescription or non-prescription "Sunglass Contact Lenses" to aid people who need to reduce the effects of light on the eyes without the associated discomfort and risks of wearing Sunglasses whilst carrying out activities, for example Sportsmen.