The Prevalence of Infectious Keratitis in the Baku City on the Basis of Applications
Purpose: to assess the prevalence of infectious keratitis in Baku city, determine the frequency of occurrence of predisposing risk factors. Materials and methods. Materials of outpatient facilities of Baku city during 2012 year have been used for the study. Diagnoses of keratitis, including infectious keratitis, were carried out in accordance with clinical recommendations. Microbiological and clinical criteria for the diagnosis of infectious keratitis were confirmed at 2199 patients (908 male and 1291 female), including bacterial keratitis at 1202 patients (514 male, 688 female), viral keratitis at 244 patients (97 male, 147 female), mycotic keratitis at 278 patients (110 male and 168 female) and mixed forms of keratitis at 475 patients (187 male and 288 female). Results. 97.9±2.1 pathological cases were determined per 100 000 person. The smallest value of the indicator was noted at the age of 0-9 years (9.3±1.6‰00). With the increasing ages of the population, the prevalence of infectious keratitis also increases and reaches a maximum level in the ages between 60-69 years (193.9±10.6‰00). This indicator decreases among population of subsequent ages. Infectious keratitis prevalence in age groups 40-49, 50-59, 60-69 years (correspondingly 180.5±7.6; 170.5±7.3 & 193.9±10.6‰00) not significantly different from each other, what can be considered as stabilization of the prevalence of pathology. The peak prevalence of bacterial keratitis occurs in the age interval 40-49 years (114.7±6.1‰00). A relatively high growth rate of the prevalence of bacterial keratitis is noted at the age of 30-39 years (57.5±3.7‰00), the level of the indicator is more than 3 times higher than its level in the age range 20-29 years (17.9±2,‰00). At age 0-9 years individually single cases of mycotic keratitis are noted (0.3‰00). The prevalence rate of mycotic keratitis dynamically increases among older population and reaches the highest level in the age range 70-79 years.Conclusion. According to application materials prevalence of all types of infectious keratitis in Baku city is 97.9±2.1‰00, 53.5±1.5‰00 for bacterial keratitis, 12.4±0.7‰00 for fungal keratitis, 10.9±0.6‰00 for viral and 21.1±0.9‰00 for mixed type of keratitis. The most common predisposing risk factors for developing infectious keratitis are eye injuries (36.9%), viral infections (14.3%), concomitant eye diseases (9.6%), which are in 10.6% of cases combined with each other. The prevalence of infectious keratitis depends on age, the rate of which is the highest at ages 40-69 years.