Medical science has seen so much of advancement in the last decade or more that these days there are probably only a few things that cannot be corrected by surgery. Laser eye treatment is one such technological wonder and it has turned out to be a well established and successful procedure and a number of people are using this as a way to sort out their vision problems. As with all surgery here too, there are some risks involved in having a serious complication like your vision being threatened or severe eye injury although they are small. But since it has been established that the surgery is not without risks we can explore some of the common risks involved.

We start with the occurrence of under correction and overcorrection. Eyes are special and unique in nature and each person's eye will respond differently to laser eye treatment so it is possible that you may continue needing corrective lenses even after surgery for clarity in your vision and another procedure may be required to correct this deficiency. Regression occurs when patients find that the effects of the procedure are diminishing as in under correction and another surgery may be required.

Excessive corneal haze occurs as part of the healing process and generally it has a miniscule effect on the final result and clarity of vision obtained, though any excesses can interfere with normal vision which may require further laser treatment. There is a 1-in-a-1000 chance of infection and delayed healing of the cornea after having undergone laser eye treatment but lasting effects don't appear till within four years of the procedure.

Irregular removal of tissue and or existence of corneal haze may interfere with the best obtainable vision for patients who use lenses and the result may not be as good as before. It leads to a decrease in the best-corrected vision. The irregular healing of the corneal tissue flap or a distorted flap may cause some distortion in the cornea, and this could also mean a decrease in vision.

Severe dry eye syndrome occurs when the eye is not able to produce enough tears post surgery to keep the eyes wet and comfortable. While this does not cause discomfort it does affect the quality of vision to a slight extent because of intermittent blurring and then there is a possibility that this might be permanent and require further surgery or at the very least, an intensive course of treatment with eye drops.

The halo effect is best defined as an optical effect experienced when there are low lights. When the pupil opens, the patient will find another image slightly faded that is in the peripheral part of the cornea that was not treated and this can cause trouble while driving at night. Flap damage or loss happens when the tissue flap hinged to the central cornea comes unhinged. While the flap can be replaced there is a chance that this bit of tissue may get damaged or lost.

All in all, there are risks involved with laser eye surgery. So one will have to take an informed decision to go ahead with it, weighing all the pros and cons and knowing what to expect and how best to deal with it.

Wearing contact lenses has become very popular in today’s society. Purchasing contact lenses online has been in high demand over the last couple of years. It is very fast, resourceful and convenient.

A long time ago, in the history of mankind, in 1508, Leonardo da Vinci described and drew the plan to express his design of a contact lens. But it was in 1827 that Sir John Hershel, an English astronomer astounded the world with his idea of manufacturing a mold of a human eye so that a lens could be made to fit perfectly. Sixty years later in 1887. F.A. Muller, a German glassblower used these ideas to create the world’s first known contact lens.

Contact lenses are full contact optical accessories which rest directly on the cornea to facilitate a better and natural vision than contemporary spectacles. Distortion due to side vision and eye-lens distance is nullified in using contact lenses. With spectacles the eye-lens distance makes the size of the objects appear bigger or smaller than actual depending upon whether you are far sighted or near sighted.

Spectacles or eye glasses block the peripheral vision due to the frame. When you look sideways, upwards or downwards, you are looking outside the perimeter of the lens which makes you look at object without the eye glasses resulting in distorted or blurred vision because you are not looking through the optic zone. This is more so because of the smaller frames in vogue today. When you wear contact lenses, irrespective of which way you look, you are always looking through the optic zone resulting in perfect vision. Contact lenses are immune to scratches and easy breakage. They are also immune to fogging and will give clear vision even on a rainy day.

Contact lenses are basically of two kinds; Soft contact lenses and RGP (rigid gas permeable) contact lenses. Both these kinds of contact lenses can be used to correct all kinds of vision i.e. myopia, hyperopia, astigmatism and presbyopia. Soft lenses are easier to wear and more comfortable while using initially, the reason why they are chosen by more than 80% users. RGP lenses are used only when you need to wear them continuously over a long period of time.

Choosing a contact lens depends upon the outcome of your optical examination by your ophthalmologist. It is always wise to inform him that you wish to use contact lenses and not spectacles, so that the ophthalmologist can test your eyes accordingly and make time to fit your contact lenses. This might be against your ophthalmologist’s preferences, as some of them do not recommend contact lenses unless you ask them especially for a set.

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Wearing contact lenses are suitable for several people with all types of life styles. They are especially suited for individuals that are very active. For example, athletes, bike riders, acrobats, swimmers, actors, and etc. They are also good for professional athletes because they do not interfere in their professional life. Contact lenses can correct all kinds of vision as referred above. If you are in any of the above professions and prefer to wear glasses, you can wear contact lenses on the job and swap them for eyeglasses in your leisure time activities.

Remember to always properly clean, your contact lenses, with the right cleaning solution and store your contact lenses in the right storing solution. Always see your eye doctor regular.

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