Age-related risk factors, culture outcomes, and prognosis in patients admitted with infectious keratitis to two Dutch tertiary referral centers
ABSTRACT To assess age-related risk factors (RFs), microbiologic profile, and prognosis of infectious keratitis and create guidelines for prevention and treatment.
Retrospective review of patients with infectious keratitis admitted to 2 Dutch tertiary referral centers from January 2002 to December 2004.
Forty-nine patients were admitted to the Academic Medical Center (Amsterdam) and 107 to the Rotterdam Eye Hospital. Mean age was 56.6 +/- 24.4 (SD) years; 49.4% were >or=60 years of age. The most common RFs among the elderly were systemic illness (36.4%), ocular surgery (33.8%), topical steroids (26%), blepharitis (20.8%), and herpetic eye disease (28.6%). This was significantly different from the most common RFs among younger patients (contact lens wear, 62.7%; chi2, P = 0.000). Gram-negative infections predominated (52.3%) and were more prevalent among younger patients (chi2, P = 0.000). Gram-positive infections prevailed among the elderly. Untreated patients had higher culture positive rates (68.7%) than patients treated with antibiotics before culturing (41.3%; chi2, P = 0.001). Elderly patients had a higher risk of perforations than younger patients (27.6% vs. 9.9%), a worse prognosis (mean VA, 6/30 vs. 6/10), and more often needed surgery (57.1% vs. 23.4%; P < 0.005 in all cases).
Infectious keratitis is a more severe disease in elderly than in younger patients with more complications and a worse prognosis. Elderly patients have multiple and more diverse risk factors, making prevention difficult. Prevention should aim at minimizing topical steroid use and controlling blepharitis, ocular surface disease, and herpetic eye disease. Initial antibiotic treatment should include sufficient coverage of Gram-positive pathogens.
Article: Ocular infections.[Show abstract] [Hide abstract]
ABSTRACT: In older patients, the prevalence of many ocular infections is increased. Increased risk of infection is due to multiple factors (described herein) that are amenable to intervention. In older patients, the severity of ocular infections, when they occur, can be greater than those of younger patients. Response to treatment may be poor in elderly patients, necessitating more aggressive or prolonged treatment. Older patients may have problems self-administering topical treatment effectively.Indian Journal of Ophthalmology 01/1987; 35(4):176-7. DOI:10.1007/978-1-60327-534-7_18 · 0.93 Impact Factor
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ABSTRACT: We determined the prevalence and clinical consequences of herpes simplex virus (HSV) type 1 (HSV-1), HSV type 2 (HSV-2), and varicella-zoster virus (VZV) in cornea tissues obtained after penetrating keratoplasty (PKP) was performed. The excised corneas of 83 patients with a history of herpetic keratitis (HK; hereafter referred to as "patients with HK") and 367 patients without a history of HK (hereafter referred to "patients without HK") were analyzed by real-time polymerase chain reaction (PCR) and virus culture for the presence of HSV-1, HSV-2, and VZV. In addition, 273 post-PKP donor corneoscleral rims were analyzed. The medical records of the transplant patients were reviewed to determine the risk factors influencing intracorneal viral load and graft survival. HSV-1 was the most prevalent herpesvirus. Both the prevalence of HSV-1 and the HSV-1 DNA load were higher in the corneas of patients with HK than in those of patients without HK. The HSV-1 DNA load in the corneas of patients with HK correlated with age, the recurrence-free interval, cornea neovascularization, steroid treatment before PKP, and disease severity. Herpesvirus DNA was detected in 2 of 273 corneoscleral rims. Graft survival was inversely correlated with the corneal HSV-1 DNA load in patients with HK. The data presented in this study argue for the implementation of real-time HSV-1 PCR to analyze the excised corneas of patients with HK, to improve post-PKP diagnosis and therapy. Screening of donor corneal tissues for herpesviruses is redundant to prevent newly acquired post-PKP HK.The Journal of Infectious Diseases 08/2009; 200(1):11-9. DOI:10.1086/599329 · 5.78 Impact Factor