I have been doing research on those(not my first time) and the risks really scare me
I accknowlege its benefits however it has its risks. I have never worn them for this reason but one of my friends says I should try them, forget lasik, forget intacs, try contacts
benefits, pros, advantages:
1. Marketers of continuous wear contact lenses say they’re a good option for people who don’t want to undergo the expense of laser vision correction, or who aren’t good candidates for surgical procedures.
2. Comfort and convenience are major advantages of this kind of lens, making it an attractive option also for those who wear eyeglasses.
3. May provide one line better vision than glasses
4. Less disortion, minification, glare and scratches as compared to glasses
5. I supposedly read that contact lenses can provide partial protection against chemicals splashing into the eye, contacs block chemicals from burning the center of the eye so only your sides become bloody and scarred. "In some cases, the contact lens protects the eye against further chemical damage."
6. Doesnt fog up in high humidity, including when its raining.
7. Improved field of side vision
8. Better cosmetic appearance when lenses replace thick spectacles.
9. One advantage of wearing contacts is that they won't get in the way while playing sports, cheerleading, dancing or doing other exercises.
10. When you're active, contact lenses don't steam up or slide down your nose.
11. Plus, they eliminate that annoying pressure behind your ears.
12.
risks, cons, disadvantages:
1. continuously wearing contact lenses increases chances of developing an infection or eye disease, although the risk is still slight.
2. You have a significantly greater chance of developing corneal ulcers if you leave contact lenses in overnight. If you use extended or continuous wear contact lenses, you should be especially alert to any eye changes such as redness, swelling, and dryness.
3. Daily disposable lenses: although generally more expensive, carry a lower infection risk. But they may be expensive!
4. likely to scratch the cornea if the lens does not fit properly or if the lens is worn while sleeping.
5. Rigid gas-permeable lenses and soft extended-wear contacts are the most likely to have protein build-up and cause lens-related allergies. Protein build-up results in discomfort, blurring and intolerance to the lenses.
6. Do not take your lenses in and out repeatedly throughout the day.
7. Extended-wear rigid lenses also can cause unexpected, sometimes undesirable, reshaping of the cornea.
8. Another sight-threatening concern is the infection Acanthamoeba keratitis, caused by improper lens care. This difficult-to-treat parasitic infection's symptoms are similar to those of corneal ulcers.
9. Also, rigid lenses don't absorb chemicals, unlike soft lenses, which Saviola says are like sponges. "They'll suck up any residues on your hands--soap, lotion, whatever."
10. "Severe nearsightedness often can't be corrected effectively with contact lenses."
11. Any time a foreign object or material is placed in the eye, there is an increased risk of problems.
12. Many people find them more comfortable to wear than hard lenses, but hard lenses usually provide sharper vision. You want comfort, wear the soft ones. You wanna see sharp, wear hard ones.
13. Sudden exposure to heat (opening an oven, hot steam or something) may fuse the contact lens to your eye.(whats its melting point?)
14. Corneal ablation - the reason I can't wear contacts. Excessive tear generation followed by an erosion (ablation) of the cornea. Everything I looked at had rings around it, even with the contacts out and glasses on.
15. Lenses that correct astigmatism are called toric lenses(regular ones cant help) They may need to be custom-made and may be more expensive than ordinary contact lenses.
16. Problems sometimes caused by wearing contact lenses include:
Dry eyes.
Problems with the cornea, such as swelling and hazy vision caused by decreased oxygen to the cornea (hypoxia), corneal scratches and scrapes, changes in the cornea's shape, or infection of the cornea.
Allergic reactions to contact lens solution.
Deposits on the lenses, which may make the lenses less comfortable and increase the risk of infection (deposits are rare with hard lenses).
Eye inflammation.
Eyelid inflammation. Inflammatory bumps can form under the eyelid, making it uncomfortable to wear contacts.
17. Contacts must fit properly on the eye — if they don't, serious eye health issues can result.
18. How much truth is there to reports of heat, bright light, dry air, whatever drying the lense and/or eye and causing it to "fuse" to the cornea making removal hard(if not impossible) and painful? See number 13.
19. I read how they can get stuck behind the eyelid, get absorbed into the eye, fall under the eye and roll to the back of the eye or deep into your skull. I hear stories of people saying their lense fell out then days, weeks or even months later, their lense suddenly "pops" out from the depths of their eye!
http://www.attention-to-details.com/...-in-my-eye.asp
20. Eyeglass prescriptions are higher than contact lens prescriptions because contact lenses sit on the eye, whereas eyeglasses sit in space in front of the eye. We call this the vertex distance. The closer a lens sits to the eye, the less strength is needed to focus light on the retina. And the stronger the prescription, the more the power adjustment. This is true for both soft and RGP lenses. — Dr. Dubow(so how would I know what pescription to get)
21. Getting into water with contacts is dangerous.... there are all kinds of nasty bugs living in swimming pools (and hot tubs as well). One of these creatures, called acanthameba, can cause horrible pain and damage to your eye, very often necessitating a corneal transplant.
22. Overuse of contacts may cause oxygen deprivation stimulates the growth of new blood vessels (neovascularization) from the conjunctiva (the membrane that covers the white of the eye) to grow into the cornea where blood vessels typically don't exist. The farther into the cornea they grow, the more problematic they can be.
23. Soft lenses do absorb elements from the tears and the environment. They can change in fit with their age and cleanliness, perhaps causing a lack of oxygen to the eyes. Their surfaces break down rapidly, causing a decreasing sharpness of vision.
24. Quoted from source: Someone told me about a guy who died in very mysterious circumstances. It seems he kept losing his contact lenses, and it turned out that they were rolling behind his eyes and getting stuck to his brain, and killed him!
25. Lenses must usually be inserted and removed daily with scrupulous cleaning and disinfection between each wearing requiring several different sterile solutions and containers.
26. On-going costs of solutions and regular replacement of lenses make lens wear more expensive than spectacle wear.
27. Lenses do not protect against eye trauma nor against dust and dirt. Protective eyewear must still be worn in sporting or industrial activities. Dusty or dirty environments may make lens wear unsuitable.
28. How many times have you witnessed a hapless individual crawling around a dance floor or basketball court occur looking for a lost contact lens? Or how often have you seen a room full of people crawling around looking for a lost contact lens?(doesnt apply to desposiable daily or weekly lenses, but do keep spares!)
I will find more risks and benefits later, will edit this posts. I could probably find 30-50 risks for contacts. I have some comments too, see my posts below for those
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