Publications by authors named "Sayan Basu"

Corneal injuries, a leading cause of visual impairment, are traditionally addressed through tissue transplantation. However, challenges such as donor shortages, graft rejection, and complications from suturing often limit their effectiveness. Current corneal adhesives frequently fall short in both adhesion strength and biocompatibility.

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Purpose: To objectively assess the long-term corneal epithelial recovery after autologous simple limbal epithelial transplantation (SLET) for ocular chemical burn (OCB)-induced unilateral limbal stem cell deficiency (LSCD).

Design: Prospective, fellow-eye controlled, cross-sectional imaging and diagnostic study.

Subjects: The study included 47 patients, who were 5 to 12 years postautologous SLET done for OCB-induced unilateral LSCD.

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Purpose: Mucous membrane pemphigoid (MMP) is a systemic autoimmune condition characterized by blistering and cicatrization, predominantly affecting mucous membranes, including those lining the esophagus, oropharynx, nasal cavity, trachea, conjunctiva, and genitalia. Ocular mucous membrane pemphigoid (OMMP) is observed in approximately 70% of MMP cases. This study aims to review the pathophysiology, clinical manifestations, diagnosis, treatment, and complications of OMMP.

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Extracellular vesicles (EVs), defined as membrane-bound vesicles released from all cells, are being explored for their diagnostic and therapeutic role in dry eye disease (DED). We systematically shortlisted 32 articles on the role of EVs in diagnosing and treating DED. We cover the progress in the last 2 decades on the classification and isolation of EVs and their role in DED.

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Purpose: The purpose of this study was to report the indications and outcomes of oral cyclosporine A (oCsA) use in vernal keratoconjunctivitis (VKC) and to assess its effect on corticosteroid use.

Methods: This retrospective review of VKC cases included patients who were prescribed oCsA. Data on clinical characteristics, demographic profile, and treatment were collected.

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Purpose: To report the long-term surgical outcomes of acquired ankyloblepharon correction using mucous membrane graft.

Methods: Five eyes of 4 patients (median age, 19 years) with acquired ankyloblepharon were managed using eyelid splitting and mucous membrane graft anchored to the recti muscles on the bulbar surface in the respective quadrant and onto the bare tarsal surface. Outcome measures include a change in the palpebral fissure width, ability to fit scleral contact lenses, visual acuity, and cosmesis.

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Significance: Artificial tears remain the cornerstone for managing dry eye disease. The current study's real-world efficacy test of carboxymethylcellulose (CMC), polyethylene glycol (PEG) 400, or sodium hyaluronate (SH)-based lubricants highlights their similar effects on noninvasive tear film parameters over the short term. However, patients reported better relief with SH-based lubricants.

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Purpose: To evaluate the growth, management, and outcomes of epibulbar dermolipomas over a 5-year follow-up period.

Methods: This was a retrospective chart review of epibulbar dermolipoma patients with a minimum follow-up of 5 years, which analyzed the changes in size, refractive errors (spherical equivalent), best-corrected visual acuity, histology, and surgical outcomes.

Results: A total of 61 eyes of 53 patients (32 females) with an average presenting age of 4.

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Purpose: To assess the tear film parameters associated with photophobia in dry eye disease (DED).

Methods: Three hundred seventy-four patients with DED (mean age, 42.2 ± 12.

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The cornea, the transparent part of the anterior eye, is vital for light refraction and vision. This review examines the intricate chemical and biochemical interactions essential for maintaining corneal transparency and highlights significant advancements in corneal biology. The cornea comprises five layers: the epithelium, Bowman's layer, stroma, Descemet's membrane, and endothelium, each contributing uniquely to its structure and function.

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Bioprinting a resilient yet optically transparent corneal tissue substitute remains a challenge. In this study we introduce an innovative methodology aimed at bolstering the mechanical and optical attributes of silk fibroin (SF) hydrogels, pivotal for the progression of cornea tissue engineering. We devised a unique eosin Y-based photoinitiator system to instigate di-tyrosine linkages within highly concentrated pristine SF solutions under green light exposure.

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Keratoconus, a progressive corneal disorder characterized by the thinning and conical protrusion of the cornea because of collagen degradation, poses significant challenges to both clinicians and researchers. Most successful animal models of keratoconus are based on genetic mutations and knock-outs in mice and rats that hinder normal corneal stromal architecture, thickness, or strength. While mice and rat models are suitable to study the molecular mechanism and physiological changes to the cornea, they are not suitable for experimental research; especially for surgical interventions like: deep anterior lamellar keratoplasty (DALK), stromal lenticule addition keratoplasty, and other advanced therapies.

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Article Synopsis
  • This study aimed to assess how tear hyperosmolarity affects the structure of corneal sub-basal nerves in patients with dry eye disease (DED).
  • The research compared two groups of DED patients—one with hyperosmolar tears and one with normosmolar tears—looking at nerve fiber length, density, and branching.
  • The results showed that patients with hyperosmolar tears had significantly reduced nerve parameters, indicating that high osmolarity in tears is linked to worse nerve health despite similar symptoms in both groups.
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An integrated cell, tissue, and eye bank is vital to meet the evolving needs of ocular transplant therapies. In addition to traditional corneal transplant tissues, it encompasses processing and delivery of transplant materials for newer treatments like cell-based therapies and gene-modified products, adhering to rigorous standards, optimizing tissue utilization with comprehensive services for surgeons.

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Allergen-based diagnostics are essential in the management algorithm of allergic diseases. Unlike systemic allergy, where the indications and interpretation of these diagnostic modalities are well established, their utility in ocular allergy is not well-defined. With the rising prevalence of ocular allergies and the need for personalized treatment strategies, there is a growing demand for precision allergen diagnostics.

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Corneal scarring is a common cause of blindness, affecting millions globally each year. A huge gap between the demand and supply of donor tissue currently limits corneal transplantation, the only definitive therapy for patients with corneal scarring. To overcome this challenge, researchers have harnessed the efficacy of 3D bioprinting to fabricate artificial corneal stromal constructs.

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Purpose: The aim of this series was to report recurrent pterygium as a presenting feature of ocular mucous membrane pemphigoid (oMMP).

Methods: A retrospective review was performed, and patients with biopsy positive oMMP who presented with recurrent pterygia were included. Data on the demographic profile, clinical characteristics, and details of the surgical intervention were collected.

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Purpose: To compare the efficacy, safety, and tolerability of lifitegrast 5% versus carboxymethylcellulose (CMC) 0.5% in adult patients with dry eye disease (DED).

Methods: A total of 370 eligible patients with DED were randomized equally to receive twice-daily doses of a single drop in each eye of either lifitegrast 5% or CMC 0.

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Article Synopsis
  • The study evaluates the effectiveness of permanent punctal occlusion (using thermal or surgical methods) for treating dry eye disease (DED) by analyzing various outcomes related to tear production and patient symptom relief.
  • Nine prospective studies involving 150 patients show improvements in tear volume and stability, but recanalization rates differ slightly between thermal (0-38.7%) and surgical methods (5-9%). Most patients felt better after the procedure, although the studies lacked proper measures for quantification.
  • The conclusion suggests that while both methods can enhance tear volume in DED, more rigorous randomized controlled trials are needed to confirm their actual effectiveness and long-term impact on patients.
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Purpose: Mitigating unwanted refractive errors is crucial for surgeons to ensure quality vision after penetrating keratoplasty (PK). The primary objective of the present study is to highlight the importance of microstructural matching of the host and the donor cornea during PK on the distribution of the corneal tissue while suturing.

Methods: For this purpose, the present study undertakes an in-vitro PK model to analyse the effect of suturing and host-donor misalignment on corneal birefringence.

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Article Synopsis
  • This text examines how mesenchymal stem/stromal cells (MSCs) interact with the immune system of the cornea and their potential to treat eye disorders.
  • It discusses the immune privilege of the cornea, highlighting key immunomodulatory substances and the regenerative properties of MSCs.
  • The article focuses on MSCs' effectiveness in treating various corneal diseases, showing promise in promoting healing and reducing inflammation based on both preclinical and clinical studies.
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To report the ocular surface and meibomian gland changes in polycystic ovarian syndrome (PCOS) women taking hormone supplementation. Case series. Three women (27 ± 11 years) already diagnosed with PCOS presented with dry eye symptoms (mean OSDI, 37.

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Purpose: The current study evaluated the lid margin microbiome of keratinized lid margins of patients with chronic Stevens-Johnson syndrome (SJS) and compared it with healthy controls and historically reported lid margin microbiome of patients with meibomian gland dysfunction (MGD).

Methods: Eyelid margin swabs of 20 asymptomatic adults (mean age = 29 ± 12 years) and 10 patients with chronic SJS (mean age = 31.2 ± 14 years) with lid margin keratinization were sequenced using next generation of 16S rDNA V3 to V4 variable region.

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Purpose: The current study used various techniques to develop a rabbit animal model of lacrimal gland damage caused by scarring conjunctivitis in the periglandular area.

Methods: Left eyes of New Zealand white rabbits were injected with 0.1 ml of 1M NaOH subconjunctivally around superior and inferior lacrimal gland orifices (Group 1, n = 4), touched with 1M NaOH for 100 s to the superior and inferior fornices with conjunctival denuding (Group 2; n = 4), and electrocauterization to the ductal opening area (Group 3; n = 4).

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Dehiscence is a common complication of corneal transplant surgery involving separating the graft from the host eye. The present article aims to investigate fundamental insights into the mechanical and structural aspects of the graft-host junction (GHJ) of a graft that survived in a patient for 13 years after penetrating keratoplasty (PK). Additionally, it adopts the sutur retention strength (SRS) test procedure defined in ISO:7198-2016 and aims to provide a comprehensive test protocol to study the biomechanics of the GHJ in extracted PK buttons.

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