Contact-lens-related corneal ulcer caused by klebsiella pneumoniae

The use of contact lenses (CLs) has been widely associated with corneal alterations that range in symptomatology and severity. Lesions may vary from small peripheral sterile infiltrates to infectious central ulcers with sight-threatening potential. Contact lens wear has been described as the most important predisposing factor to microbial keratitis worldwide. Infections are more frequent in soft-lens users, and the risk with gas-permeable rigid lenses is estimated to be onethird of that with daily-wear soft lenses. Extended wear is also associated with a higher risk of microbial keratitis. Bacterial keratitis is most commonly caused by aggressive gram-negative Pseudomonas spp.; Klebsiella spp. is rarely the causative agent of keratitis due to contact lens wear. We present a case of contact-lens-related bacterial keratitis caused by Klebsiella pneumoniae.