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| Year:
2013 |
Month:
September
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Volume:
2 |
Issue:
3 |
Page:
6 - 10 |
Study of Bacterial and Fungal Profile
of External Ocular Infections in a
Tertiary Care Hospital
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Correspondence
S.S.M.Umamageswari, M.Jeya, C.Suja,
Dr. M. Jeya,
Professor and Head, Department of Microbiology,
Chettinad Hospital and Research Institute, Kelambakkam-603103, District-Kanchipuram, India.
Email: drmjeya@gmail.com
Ph: 09688788426 :
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Aim: To identify the etiology, incidence and prevalence of External ocular bacterial and fungal infections, and to assess the in-vitro antimicrobial susceptibility to the bacterial isolates.
Material & Methods: This study include 125 patients with external ocular infections treated in the tertiary care hospital-Chettinad Hospital and Research Institute, Chennai, India, between March 2011 to April 2012. The patients were examined by slit-lamp biomicroscopy, and then corneal scrapings, conjunctival swabs and purulent material were collected for cultures, smears and antibiotic sensitivity test by using standard protocols.
Results: Out of 125 patients with external ocular infection, culture positivity was found in 80(64%) patients and rest of 45(36%) patients were culture negative. Among the 80(64%) culture positive patients, 45(56%) patients had conjunctival infections and 35(44%) had keratitis. From conjunctival infections - 49 bacterial isolates were recovered. The predominant bacterial isolate was found to be Coagulase negative Staphylococci 21(43%) followed by Staphylococcus aureus 12(24%). Among keratitis patients, 10(29%) patients had bacterial infection, 23(66%) patients had fungal infections and 2(5%)patients had mixed infections with bacteria and fungi. The predominant fungus was Fusarium species 12(48%) followed by Aspergillus flavus 6(24%). The gram positive isolates were susceptible to Vancomycin 100% followed by Ciprofloxacin 75%. Gram negative isolates were susceptible to Imipenam 100%, Amikacin 100% and Ciprofloxacin 96%.
Conclusion: Coagulase negative Staphylococci frequently causes infection of the conjunctiva. Infections of the cornea due to filamentous fungi are a frequent cause of corneal damage in developing countries in the tropics and are difficult to treat.
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