You will very rarely find two people that have that exact same shape of eye or vision. Even identical twins could have completely different vision problems. That is why contact lenses are custom made for each person. Of course, manufacturers can not afford to produce each and every lens as a one off. They mass produce thousands of lenses at a time.
These lenses are then custom ground by the lens crafter to suit your particular needs. Only a doctor can determine what your needs are. That is why before you even think about buying a pair of contact lenses, you should first visit the optometrist.
After carefully examining your eyes. The optometrist will give you a prescription. However, in most cases he won’t actually “give” you the physical prescription. You may have to ask for this if you plan to buy your contact lens from someone else.
In most cases, you can find a much better deal online. But, if you aren’t comfortable ordering such a personal item online, then by all means, let the doctor take care of everything for you.
Once you are ready to order, you have many choices. Here are some of the different types of contact lenses that are available.
Daily wear – These are intended for daily use. You put them in when you get up and take them out before bed. Of course, you might want to take them out sooner in order to give your eyes a break.
Extended wear – These can be left in your eyes longer than daily wear. They are ideal for people that work long hours. You should take them out before bed. Some people think that extended wear means that you can wear them for a week straight. This is a very bad idea. You should never sleep with contacts in your eyes. And if you don’t give your eyes a break once in a while, you could end up with all sorts of eye problems.
UV protection – These lenses have UV blocking filters built in to protect your eyes in the sun. when worn with sunglasses, your eyes are fully protected from harmful UV rays.
Bifocal and Toric contact lenses – This type is relatively new. They help people with astigmatism, hyperopia and myopia. What makes them unique is that they can be used for both nearsightedness and