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Avoiding infections. We know contact lenses can result in complications. These are:
Allergic conjunctivitis
 Giant papillary conjunctivitis (GPC) is commonly associated with soft contact lens wear. The conjunctiva is usually red and inflamed from papillae, which are little raised red nodules in the conjunctiva. Symptoms include itching, increased lens awareness and eye mucus discharge. The condition is thought to involve sensitivity to the lenses or lens deposits.
Infective corneal ulcer
This is the most dangerous contact lens-related complication, resulting in scarring, perforation or even loss of vision. Such ulcers occur more frequently in extended (overnight) soft lens wear than in daily soft lens or rigid lens wear. They are marked by red eye, pain, photophobia and tearing. The wearer may also notice a white spot in the cornea. Lens wear should be stopped immediately and an eyecare practitioner consulted. To reduce the risks:
- follow lens care instructions properly, especially the cleaning and storage of lenses
- replace lenses on a regular basis
- avoid excessive wear, especially overnight wear
- never re-insert lenses without disinfecting
- discontinue wear if red eye develops
- always wash hands prior to handling lenses
- avoid swimming with lenses in the eyes
- replace cases regularly, e.g. every 3 months
Corneal hypoxia
Corneal hypoxia (lack of oxygen) may occur after a long duration of soft hydrogel contact lens wear, especially for those with high myopia. The signs are corneal edema (swelling) and blood vessels growing into the cornea.
Lens problems
Chipped or cracked lenses can irritate the eye and cause redness. A poor fitting lens may also cause redness and discomfort. A foreign body trapped under the lens can cause corneal abrasions.
Solution reactions
Some lens care solutions, when used incorrectly, can cause a toxic reaction in the eye. Always clean lenses before disinfection/soaking rather than after soaking to lessen the chances of introducing the cleanser into the eyes. A toxic reaction may also occur if lenses are contaminated by common substances such as hand creams.
"Contact lens wearers should be aware of all the above complications and associated symptoms, and see their eyecare practitioner promptly should problems arise."
– Dr Lim Li, Senior Consultant, Corneal & External Eye Disease Service, Singapore National Eye Centre
SNEC is Singapore’s leading provider of quality and integrated eye care for a wide spectrum of eye conditions and diseases, with more than 50 specialists and 350 nursing and paramedical staff. Since 1998, SNEC has performed more than 35,000 LASIK procedures. Among them is the singlasikexperience, unique to SNEC, with a faculty of more than 10 senior eye surgeons offering the widest range of LASIK options. Call 6227-7266 6227-7266 or visit http://www.snec.com.sg |