Staphylococcus aureus ulcer associated with continuous wear of silicone hydrogel contact lenses

Eye & Contact Lens
Muriel M Schornack, Daniel Peterson

Abstract

To report a case of culture-positive Staphylococcus aureus keratitis associated with continuous wear of lotrafilcon A lenses. The case report of a patient who developed microbial keratitis while wearing lotrafilcon A contact lenses is presented. A 41-year-old white man had worn polymacon contact lenses successfully for at least 10 years. He habitually replaced the lenses every 1 to 2 years and frequently wore them continuously for up to 3 months. He was refitted with silicone hydrogel lenses and was advised to remove and replace the lenses monthly. Approximately 18 months later, he developed a midperipheral, culture-positive S. aureus ulcer in his right eye. He was treated with fortified cefazolin and gentamicin for 2 weeks, followed by ciprofloxacin for 2 weeks. The ulcer resolved completely. The patient's final visual acuity was 20/20 in the affected eye. The increased oxygen permeability of silicone hydrogel contact lens materials may reduce the risk of hypoxic complications of continuous contact lens wear. As this case shows, however, even patients who have continuously worn lenses with very low oxygen permeability without incident can develop microbial keratitis when wearing silicone hydrogel lenses. Contact lens practitio...Continue Reading

References

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Citations

Apr 17, 2007·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Brien Holden, Percy Lazon de la Jara
Dec 17, 2008·Journal of Oleo Science·Nobuhito TabuchiMasahiko Abe
Mar 11, 2008·Eye & Contact Lens·Muriel M SchornackGregory J Griepentrog
Sep 23, 2008·Expert Review of Medical Devices·Seana M McGlincheyDavid S Jones
Mar 4, 2011·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Lívia SantosJoana Azeredo
Dec 7, 2007·Optometry : Journal of the American Optometric Association·Muriel Schornack
Feb 3, 2007·Biochemical and Biophysical Research Communications·Ashok KumarFu-Shin X Yu

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