Numerous lens designs are available to correct a variety of vision problems: Spherical contacts are the typical, rounded design of contacts, which can correct myopia (nearsightedness) or hyperopia (farsightedness). Bifocal contact lenses have different zones for far and near vision to correct presbyopia. This is a problem in which the aging eye beginning at around age 40 is unable to focus at all distances, often noticed when print begins to blur is a contact lens utilized to change the curvature of the cornea on a temporary basis. This lens is mainly used to correct myopia. Toric contact lenses are used to correct astigmatism, as well as for myopia and hyperopia. Toric lenses contain two powers, made with curvatures at different angles (one for astigmatism, the other for either myopia or hyperopia. They are specially designed so that they will not have a lot of movement or rotation. Proclear Multifocal Toric is a monthly replacement contact lens, specified to address both presbyopia and antistigmatism. According to the manufacturer, , all Proclear Multifocal contact lenses are developed using PC Technology, which makes a unique material containing molecules of phosphorylcholine (PC), a substance found naturally in human cell membranes. These miracle molecules attract and surround themselves with water, keeping Proclear lenses moist and comfortable. Dry Eyes- In addition to myopia, antistigmatim, or hperopia many people also have dry eyes. Dry Eyes means they don’t produce enough tears to keep the eye moist or that the tears that do not have the correct chemical make-up. A significant percent of the population experience dry eyes as they get older. There are products made particularly to address these issues. Acuvue Oaysis for dry eyes is one product. There are also particular products for people who have eyes that are both antistigmatism and dry eyes called Acuvue Oaysis for Astigmatism. Additional Lens Features- Colored Contact Lenses. Numerous types of lenses come in varying colors. One of the most popular color contact lenses is Freshlook , with about 3.2 million users. They will change your natural eye color and work with both light and dark eye colors. Special-Effect Contact Lenses. These contact lenses are often used for novelty or Halloween. They have varying designs. Some designs can make the eyes look like cat eyes. Some atheletes are experimenting with them to intimidate their opponents. UV-Inhibiting Lenses. Numerous contacts include UV inhibitors. Contacts don’t cover the entire eye. It is still important to protect the eyes from hazardous UV Rays, using quality sunglasses. Hybrid Lenses. One brand of lenses features a rigid gas permeable, GP center with a soft outer skirt, providing wearers with both the the comfort of a larger soft lens and the crisp optics of a rigid lens. It is clear that the options for wearing contact lenses are expanding. The option to be free of glasses is a reality. You can see what cotacts fit your needs on the web at sites like
Safety of contact lenses, like lawn mowers and airplanes, depends far more on human behavior than on modern technology. It is a fact that few technologies start out with the intention of hurting people directly or through the environment, and most evolving threats to people are eventually recognized. It is also a fact that no situation in this world exists that cannot be made much worse by human ignorance, laziness, and stupidity.
So, how can people make good contact lenses dangerous?
The most common risk factor is sloppy cleaning practices. The eyes and tears produce various proteins which can build up on contact lenses. Proper cleaning procedures will remove that build up. Getting lazy, skipping a scheduled cleaning, using old solutions or previously used stock, these can all result in residues. At a minimum, this can result in blurred vision and/or irritated eyes. It can also cause infections and abrasions so severe as to prevent further use of contacts, or even cause blindness.
The second most common hazard is external contaminants and contaminants. Do not swim or go into hot tub while wearing contacts unless they are shielded by leak proof swimming goggles. Don't wear contacts in the presence of fumes from solvents, acids, cleaning solutions, etc.. Be alert to dust, pollen, other allergens. Any of those irritants can be trapped under or inside the contacts. And never be so stupid as to moisten lenses in the mouth instead of in a lens case with fresh solution, or with approved eye drops.
The third most common risk factor is wear time. This is an issue which is aggravated by claims from some contact lens makers. Very simply, don't wear contacts frequently around the clock, even if they are rated for 30 days or 3 months. In the short term, long wear lenses are probably safe. However, in the long term, insufficient reach of oxygen from the air to the eye surface (cornea) causes the eye to increase blood flow through a proliferation of new blood vessels, which can eventually block vision, like cataracts. The progress of this condition, called "neovascularization", can be slow so not recognized until too late. Unless contacts have to be installed by a care giver, the wearer should seldom omit rest times with lenses out. Some ophthalmologists recommend at least twelve hours off every week with long-wear lenses.
And don't overlook safety precautions. Just as spectacle users should have break resistant lenses or safety goggles, contact wearers should wear safety goggles when at risk. Rare stories tell of a hard contact lens stopping penetration by pieces of metal or glass that got through the eyelid, but modern contacts cover only a small portion of the eye.
The natural eye has evolved over numerous millenia to be largely self protecting. But don't ignore common sense care to reduce the probability of injury.
Both Cj Folkes & Dr. Don Miller are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
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