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Contact Lens Induced Infections
The primary source of bacterial infections is poor contact lens cleansing regiments and poor hygiene of the patient. Patients who have existing blepharitis or dry eyes are more prone to infections, further complicating the situation. Disposable and frequent replacement contact lenses were developed to combat these problems. Other types of contact lens induced infections include sterile corneal infiltrates, acanthamoebic keratitis, and fungal keratitis. Sterile corneal infiltrates occur in patients who are sensitive to the preservatives used on contact lens solutions. Symptoms include burning, itching, pain and discharge. Patients should be treated with topical antibiotics and perhaps topical steroids. Acanathamoebic keratitis is found primarily in those patients who wear soft daily lenses and make their own saline solution. It is also common in people who swim with lenses in. This is because acanthamoeb is a pathogenic protozoan found in contaminated water, soil, dust, or may be airborne. Initially the corneal epithelium is effected. Later the corneal tissue and even the sclera are effected. Treatment can be lengthy and involves a combination of a topical antimoebic, and topical steroids. Prevention including avoiding non-sterile solution and tap water is every patient’s best choice. Fungal keratitis occurs most often with high water content hydrogel lenses in humid climates. It appears as a superficial gray feathery infiltrate. It is associated with satellite lesions and inflammation. Again prevention with proper lens care is the best medicine. Article Directory: http://www.articledashboard.com Ronny Smith is the contact lens specialist. He writes many books on disinfection of eyes. He always focused on contact lenses usages. |
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