Long-term prognosis of penetrating keratoplasty in a patient with limited form of Scleroderma- a case report.

PURPOSE: To explore the challenges of managing recurrent graft rejections in patients with Macular Corneal Dystrophy (MCD) undergoing Penetrating Keratoplasty (PKP) who also have an underlying diagnosis of Systemic Sclerosis, specifically the limited form known as CREST syndrome. METHODS: The case of a 47-year-old female diagnosed with MCD who underwent multiple PKPs over a 13 year period was reviewed. The patients treatment included extensive surgical interventions (PKPs, amniotic membrane transplatation, tarsorrhaphy) and medical management involving systemic and topical steroids and immunosuppressive therapy (Tacrolimus ointment). RESULTS: Initial PKP surgeries improved the patients vision, but subsequently graft rejections,both acute and chronic, required further surgical and medical interventions. Despite aggressive management, the patient experienced multiple graft failures, with the final visual outcome being significantly compromised (vision 6/60). the presence of CREST syndrome complicated the management and prognosis of graft survival. CONCLUSION: This case illustrates the significant impact of systemic autoimmune disorders like CREST syndrome on the prognosis of PKP in patients with MCD. It highlights the necessity for diligent systemic evaluation and possibly more aggressive immunosuppresive strategies to manage graft rejections and prolong graft survival in such complex clinical scenarios.

Viral Keratitis, Surgical Intervention in Viral Keratitis, Challenges in Diagnosis and Treatment of Viral Keratitis, HSV, HZV.

Viral keratitis is a significant cause of ocular morbidity and visual impairment worldwide. In recent years, there has been a growing understanding of the pathogenesis, clinical manifestations, and diagnostic modalities for viral keratitis. The most common viral pathogens associated with this condition are adenovirus, herpes simplex (HSV), and varicella-zoster virus (VZV). However, emerging viruses such as cytomegalovirus (CMV), Epstein-Barr virus (EBV), and Vaccinia virus can also cause keratitis. Non-surgical interventions are the mainstay of treatment for viral keratitis. Antiviral agents such as Acyclovir, Ganciclovir, and trifluridine have effectively reduced viral replication and improved clinical outcomes. Additionally, adjunctive measures such as lubrication, corticosteroids, and immunomodulatory agents have alleviated symptoms by reducing inflammation and facilitating tissue repair. Despite these conservative approaches, some cases of viral keratitis may progress to severe forms, leading to corneal scarring, thinning, or perforation. In such instances, surgical intervention becomes necessary to restore corneal integrity and visual function. This review article aims to provide an overview of the current perspectives and surgical interventions in managing viral keratitis. The choice of surgical technique depends on the extent and severity of corneal involvement. As highlighted in this article, on-going research and advancements in surgical interventions hold promise for further improving outcomes in patients with viral keratitis.

Fulminant keratomycosis caused by Cylindrocarpon lichenicola- A case report.

PURPOSE: To report the clinical features, phylogenetic characteristics, microbiological characteristics, and the management of the rare emerging fungal species Cylindrocarpon lichenicola. METHODS: A 55-year-old male farmer presented with a history of pain, redness, and defective vision. The corneal scrapings revealed septate hyphae macroconidia and multi-celled chlamydospores with lactophenol cotton blue mount. In addition, the culture revealed velvety to floccose, white growth with a pinkish-brown rim on the Sabouraud's dextrose agar. The growth was suggestive of the rare fungus Cylindrocarpon lichenicola. RESULTS: The course of the infection was rapidly progressive, involving the entire cornea with descemetocele and impending perforation. Reinfection with the rapid spread of disease to the sclera was noted; finally, evisceration with scleral frill excision was done. CONCLUSION: To our knowledge, this is the first case report of Fulminant Sclero Keratomycosis caused by Cylindrocarpon lichenicola.

Corneal blindness and eye banking: Current strategies and best practices.

Corneal blindness (CB) is one of the leading causes of blindness in India and globally, affecting around 8 million population worldwide. Many of these corneal blind patients may be visually rehabilitated by corneal transplantation (CT). Eye banking plays a crucial role in facilitating CT and ocular research. Many countries have adopted regulatory frameworks, quality assurance programs, and technological advancements to enhance the efficacy and safety of CT. Various infrastructural and organizational frameworks of eye banks (EBs) in India, according to the Eye Bank Association of India (EBAI), aid in establishing guidelines and standards for EB practices. Initiatives such as the National Programme for Control of Blindness (NPCB) have significantly contributed to eye donation rates and improved access to donor corneas. This review article discusses the established eye banking networks in countries such as India, the United States (USA), and Europe, where dedicated EB organizations work collaboratively to ensure efficient procurement, processing, and distribution of corneal tissue. It also highlights specific strategies employed in India and global countries to address EBs' challenges. These challenges include the shortage of donor corneas, improving donor screening and tissue processing techniques, ensuring timely distribution of corneal tissue, and maintaining high-quality standards. Interestingly, the comparative analysis between India and other developed countries highlights the similarities and differences in eye banking strategies. By understanding the strategies employed by different regions, EBs can learn from each other's experiences and work toward achieving optimal outcomes in CT and ocular research worldwide. It underscores the importance of knowledge sharing and collaborative efforts in addressing common challenges and implementing best practices in eye banking.