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Contact Lenses

Contact lenses are clear and flexible, and fit on the cornea of the eye to correct vision. Questions in this category can include how to purchase and care for contact lenses, as well as health concerns.

915 Questions

Is it okay to wear contacts overnight?

Do tothe pressure of your eye lids during the night, depending on how long you sleep for, the contact could become permanently stuck on your eye and will over time turn yellow. Therefore your vision will e yellow until you eventually go blind.

Do contact lenses have a expiry date?

You can but it is not advisable nor is it safe. After the expiration date, your contact lens solution may begin to degrade; how fast will depend on the brand and chemical components of the product you use.

This can mean that the pH level, which is optimal before the expiration date, will become unstable and likely more acidic. Irritation, itchy eyes, blurriness, and infection can occur with use of expired contact solution.

I accidently used a 2007 solution (the current date was late 2009) and found myself with extremely uncomfortable burning vision until I realized my mistake. Consult your eye doctor always for any personal advice like I did.

What are the advantages of disposable contact lenses?

Whether they are better or not is a question that is still being discussed in the Medical community. However, the advantages of the disposable is that they are permeable, which allows movement of moisture and air through them, making them easier to wear. They also adhere more closely to the eyeball, making them much less likely to fall out. Hard contacts are less likely to spread disease and force the eyeball to stay in proper shape, an important aspect for some eye diseases and conditions. Generally speaking they are more permeable to air, so your eyes get more oxygen. GENERALLY SPEAKING THEY don't make "hard" contact lenses anymore. The difference between regular and disposable contacts is strictly CONVIENIENCE. Both types are very "breathable", allowing oxygen to reach the eye. However, permenant contacts need constant upkeep. You need to steralize them in special containers which need electricity and special solutions in which to steralize them. With disposable lenses, you don't need all that inconvienience. You wear them and toss them out. With modern advances, they are able to make disposable lenses on par, cost wise, with permenant lenses. I have no doubt that soon, all lenses will be disposable. <<>> In Addition: Contact lenses come in different materials and different designs. Silicone hydrogel lenses are the most common non-daily lenses, usually allowing more oxygen flow to the cornea. Very soon there will be daily-wear silicone hydrogel lenses available such as 1-Day Acuvue TruEye from Johnson & Johnson. Other manufacturers will follow.

Can you share contacts lenses?

yes but ask your eye doctor if you are talking about children

Pretty much anyone has the ability to wear contacts. Though, certain eye conditions may prevent people from being able to wear contacts.

Where does the contact lens sit?

The left one goes in the left eye and the right one goes in the right eye... ;)

Does a sty infect contact lenses?

not a good idea, that could be the reason you have your styy.

Do doctors recommend contacts for 11 or 12-year-olds?

Yes, children as young as nine are able to wear contact lenses. In fact, because of their high levels of involvement in team sports, it is often recommended that children wear contacts, rather than trying to wear glasses, as it is quite simply more convenient.

How do you get rid of a small piece of a contact lens in your eye that ripped when you were taking it out?

This works for other foreign material as well like hair, dust and eye boogers. Take a square of toilet paper and twist one corner into a point. Use this point to touch the foreign matter and the moisture on the item will make it stick to the point.

What was the sales volume of colored contact lenses by the end of the 1990s?

Despite the high cost of these lenses and the discomfort they often caused, consumers purchased enough contact lenses to push annual sales from $2 million in 1950 to $60 million by 1959.

Why did Adolph Fick invent contact lens?

His work was based on early work, showing in theory how a lens with an appropriate curvature and refractive index could be overlaid on the cornea to provide refractive correction.

What are the best contacts for astigmatism?

I have worn colored contact lenses for years. I just had an eye appointment this last week. My left eye has toric astigmatism. I inquired about being able to continue wearing colored contacts. I was assured I could continue, as long as they fit on my eye and the doctor was satified with the fit. They unfortunatly cost more because they are specially made to fit your eye.

Can a 13 year old wear contact lenses?

Yes a 11 year old can wear contact lenses. The question is .... is this 11 yr old responsible enough to manage and care for his or her eyes? Be trusted to do the right thing like removing them when the eye is red, burning, itching, pain etc. ? Keeping the lenses clean? hands clean? Disposing the lenses after its life span, 1 month or 2 weeks? Not sleeping in contacts? Not swimming in contacts? And not over wearing contacts? Totally up to the parents

Can you wear contact lenses in the laboratory?

Yes you can, but when working with certain severely irritating chemicals you should at least tell your supervisor and coworkers that you are wearing them, so they know to remove them quickly if you take a chemical splash in the eye.

Nevertheless, some labs have rules against using contact lenses under any circumstances. If you enter such a lab, you should comply with their rules.

Who was the inventor of contact lenses?

Leonardo da Vinci is frequently credited with introducing the general principle of contact lenses however, did not suggest his idea be used for correcting vision. Modern soft contact lenses were invented by the Czech Chemists Otto Wichterle and Drahoslav Lim.

How can one obtain free contact lenses?

You get them from an eye doctor. You also can get contacts from a Contact lens practitioner and the Internet. The safest option for your eye health is a contact lens practitioner or a ophthamologist, Optometrist. Check the upfront fee's for fittings and cost of the lenses. Buyer beware their can be a large price difference between the sources.

Can you take contact solution on a plane?

Yes, but you should not leave it in your suitcase. Keep it in a plastic bag and make sure that the contact lenses case is secured properly. Putting the contact case and solution in a plastic bag will come in handy incase the solution bottle spills.

Where to buy colored eye contacts?

you can buy them in all good chemists but the easy way you can order from online shop.

I order from Solution-lens, only 19.90 per pair and free shipping world wide :-)

Will you go blind if Lens Cleaner comes in contact of the eye?

Not when I did. Just make sure that you wash your eye as soon as possible. Eye may itch,burn, and grow red, but it does not have permeanant affect if treated. If it does remain in your eye though it may cause problems. After washing out your eye or eyes, but itching and burning continue see an eye doctor as soon as possible. I am not a doctor, but I have read articles on it when I got some in eye. You should still get a professional opinion on any matter pertaining to your body's health

Where can one buy cheap prescription lenses online?

39 Dollar Glasses and Zenni Optical are two of the many online suppliers that offer prescription glasses from as little as $10 and they will send sample styles direct to your house. Prices increase depending on coatings, prescription requirements and styles. Alternatives include Coastal, Lens Crafters and Glasses direct.

When were the disposable contact lenses invented?

In essence Leonardo De Vince invented the concept in 1508, Sir John Herschel, in 1845, Hungarian Dr. Dallos 1929, put forward ideas, but it was 1887, Louise J Girard invented a similar scleral form of contact lens. Glass-blown scleral lenses remained the only form of contact lens until the 1930s

The principal breakthrough in soft lenses was made by the Czech chemists Otto Wichterlee and Drahoslav Lim who published their work "Hydrophilic gels for biological use" in the journal Naturein 1959. This led to the launch of the first soft (hydrogel) lenses in some countries in the 1960s and the first approval of the "Soflens" material by the United States FDA in 1971.

What problem do contact lenses cause?

They could if you use the contact past its expiry date, use dirty hands to touch your contacts, use expiry contact lubricants and if you sleep in contacts beyond the days advised by your optician. So its better to keep them with care.

Can you use expired contact lenses?

No, expired contact lens can't be used. These are medical devices that must be sterilized and packaged in sealed containers before being sold to eye doctors and consumers. Since they touch the eye, they have the potential to harm the eye if they are contaminated. So packaged medical devices also have a expiry date as a consumer protection measure.

How to remove glass contact lens that are stuck?

If they are stuck together and a little dry, you can throw them in the trash and get a new pair out. Once the plastic of the lenses gets dried out or stuck to something, pulling them back apart causes the lenses to be ripped, nicked or otherwise defective. Trying to wear them with a defect can cause major irritation or even a corneal scratch.

Why is eye contact important within care settings?

Eye contact shows that you really are interested/care about the person, and if you're in health care of any kind (especially social) you want to be as friendly as possible

Do xray vision glasses exist?

Xray vision glasses are mearly a myth or a fantacy used to get kids imaginations working some people belive that they are real and that they really work yet some dont my guess is that they probable arent real... mabey in the future technology will grow and we will be able to have that kind of knowlege but for know it is simply just a myth.