(Natural News) Wearing contact lenses has its pros and cons. Contact lenses are invisible, weightless, and are not as cumbersome as eyeglasses. That said, they can still lead to nasty complications if you were them incorrectly or for too long. Listed below are some of the common problems that may occur if you improperly wear your contact lenses:

Seasonal allergies and contact lenses: Wearing contact lenses when you are highly exposed to allergens, such as mold spores or pollens from grass or weeds is not a good idea. This is because allergies can result in eye irritation.

Lens material: Some contact wearers may also be allergic to the lens material itself or to protein deposits on the lenses. As the eyes need to breathe, it is best to avoid wearing lenses made of older materials or inadequately fitting contact lenses. Wearing these may not allow enough oxygen to the eye.

Over-wear: When you wear your contact lenses for too long, your eyes do not get enough oxygen. Wearing poorly fitted contact lenses also contributes to over-wear problems. Over-wearing contact lenses may possibly result in corneal abrasion or infection complications, with symptoms such as redness of the eye, blurry vision, eye pain, tears or discharge, and light sensitivity.

Corneal abrasions: Corneal abrasions, or scratches on the surface of the eye, can possibly occur because of poorly fitted contact lenses. A corneal abrasion may also occur when removing the lens or getting a fingernail in the eye. Having a corneal abrasion can be extremely painful and uncomfortable. It can even lead to an infection.

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Microbial keratitis: Keratitis is an infection of the cornea that can be caused by bacteria, viruses, fungi, or protozoa or microscopic parasites. Since it is an infection, it can be serious and can pose threat to your vision.