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Three Different Protocols of Corneal Collagen Crosslinking in Keratoconus: Conventional, Accelerated and Iontophoresis
Published on: November 12, 2015
Update on diagnosis and management of refractory corneal infections
Shweta Agarwal1, Tanveer A Khan2, Murugesan Vanathi2
1Dr. G. Sitalakshmi Memorial Clinic for Ocular Surface Disorders, C. J. Shah Cornea Services, Medical Research Foundation, Sankara Nethralaya, Chennai, Tamil Nadu, India.
Abstract:
Infectious keratitis is a medical emergency resulting in significant visual morbidity. Indiscriminate use of antimicrobials leading to the emergence of resistant or refractory microorganisms has further worsened the prognosis. Coexisting ocular surface diseases, delay in diagnosis due to inadequate microbiological sample, a slow-growing/virulent organism, or systemic immunosuppressive state all contribute to the refractory response of the ulcer. With improved understanding of these varied ocular and systemic factors contributing to the refractory nature of the microbes, role of biofilm formation and recent research on improving the bioavailability of drugs along with the development of alternative therapies have helped provide the required multidimensional approach to effectively diagnose and manage cases of refractory corneal ulcers and prevent corneal perforations or further dissemination of disease. In this review, we explore the current literature and future directions of the diagnosis and treatment of refractory keratitis.
Insights
Refractory infectious keratitis, often caused by antimicrobial resistance, requires a comprehensive approach. Understanding ocular and systemic factors, biofilm formation, and new therapies is crucial for effective management and preventing vision loss.
Area of Science:
- Ophthalmology
- Microbiology
- Infectious Diseases
Background:
- Infectious keratitis poses a significant threat to vision, complicated by rising antimicrobial resistance.
- Refractory cases result from factors like ocular surface disease, diagnostic delays, virulent organisms, and immunosuppression.
Purpose of the Study:
- To review current literature on the diagnosis and treatment of refractory infectious keratitis.
- To explore emerging strategies and future directions for managing challenging corneal ulcers.
Main Methods:
- Comprehensive literature review of studies on refractory keratitis.
- Analysis of factors contributing to treatment resistance and biofilm formation.
- Evaluation of novel therapeutic approaches and drug delivery systems.
Main Results:
- Understanding of ocular/systemic factors and biofilm formation is key to managing refractory keratitis.
- Improved drug bioavailability and alternative therapies offer new treatment avenues.
- A multidimensional diagnostic and management strategy is essential.
Conclusions:
- Effective management of refractory keratitis necessitates a multifaceted approach.
- Continued research into novel therapies and diagnostic methods is vital.
- Preventing corneal perforation and disease spread requires timely and appropriate intervention.
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