Overnight wear of contact lenses deprives the cornea of oxygen and facilitates bacterial, fungal, or amoebic contamination, making it the single most common and modifiable risk factor for microbial keratitis. Daily eyelid hygiene, use of preservative-free artificial tears, and wearing safety glasses do not increase infection risk and may be protective.
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BCEN CEN
Maxillofacial and Ocular Emergencies
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