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Contact Lens Wearing Problems
A dirty and/or dry contact lense from not enough blinking causes most wearing problems. Blink more and clean the contact lense each time they are removed from your eyes or once a week at least. Another common cause is wearing a contact lense that is damaged or worn out and needs to be replaced. A soft contact lense is very delicate and tears easily so handle it carefully. The following are 9 of the most common contact lense related problems:
1. Fluctuating vision-usually caused from contact lenses that are too loose or too tight on the eyes.
A more common problem with unstable astigmatism contact lenses that rotate with each blink.
2. Damage and loss of the contact lense-low water content lenses are more durable than high water content contact lenses and are not as easily torn or cracked. Contact lens loss is more commonly caused by rubbing eyes during sleep. Patching the eyes during sleep or removing the contact lenses before bedtime usually solves the problem.
3. Deposits on contact lenses-either classified as hard or soft deposits. Soft deposits can be cleaned off the contact lens surface with a surfactant contact lens cleaner and/or an enzymatic contact lens cleaner. Lipoprotein and calcium which come from your tears causes the hard deposits. They become imbedded into the matrix of the contact lens causing the contact lenses to become uncomfortable to the point of making them unbearable. Hard deposits cannot be cleaned off the contact lens without damage to it's surface which ruins the contact lens.
4. Tightened Contact lenses - If the contact lens curvature increases while the contact lenses are being worn it may cause the eyes to get sore and inflamed. Contact lenses drying out from not blinking enough or inadequate blinking usually creates this condition. A looser fitting contact lens of lower or higher water content, increased blinking and eye drops may also help solve the problem.
5. Giant papillary conjunctivitis-is an allergic reaction to the underside of the lids as a result of the deposits on the contact lenses causing burning, irritation, blurred vision and mucus formation. Treatment consists of discontinuing contact lens wear and administering lodoxamide and cromolyn sodium. After resolution the contact lens of choice is the one time daily wear contact lens. This problem can easily reactivate if contact lenses are again worn when new surface deposits form.
6. Neovascularization-is an unusual increase in the formation of blood vessel at the corneal periphery from insufficient oxygen in the cornea from a tight contact lens and/or over wear which is most common with contact lenses worn overnight. It is a sign that something is wrong and changes need to be made such as using one day disposable contact lenses taken out at night and fitted on the loose side. Don't wear any contact lenses If the condition continues to worsen.
7. Corneal infiltrates-these are white deposits composed of white blood cells in a clear cornea usually caused by an infected or tight contact lens. Treatment is antibiotics and discontinuance of contact lens wear.
8. Superior limbic keratoconjunctivitis-shows up as an irritation to the eye near the corneal edge covered by the upper lid. It is of unknown origin. It makes wearing contact lenses difficult to intolerable as the eyes burn and itch. A Rose Bengal stain demonstrates a break down of the tissue. This condition will usually heal if the contact lenses are discontinued for awhile.
9. Infection of the eyes-infections are among the most serious complications of contact lens wear and is generally caused by poor hygiene. It can sometimes lead to ulcer formation on the corneal. Vision loss can occur if antibiotics are not used in a timely manner. Symptoms are light sensitivity and red tender eyes usually with a pussy discharge. Sometimes the most obvious symptom is pus in the corner of the eye and the eyelids sticking together upon awakening with the lashes covered with pus. The most serious complication is a keratitis caused by the Acanthamoeba which forms a corneal ulcer. Being difficult to treat it usually results in a corneal transplant as the final outcome. Even though this conditions is very rare and never seen by the average doctor, it is still a concern.