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Open research questions in Ocular Diseases and Behçet’s Syndrome

92 gap statements mined from Ocular Diseases and Behçet’s Syndrome papers in our 4.5M-paper local library, which holds 526 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • First, therapies is still limited by small sample sizes, retrospective study design, and marked disease heterogeneity, underscoring the need for adequately powered randomized controlled trials to validate early efficacy signals and define optimal positioning within treatment algorithms.

    Emerging therapeutic targets in non-infectious uveitis and scleritis · 2026 · DOI

  • There is a lack of broadly applicable treatments for retinitis pigmentosa. Most patients still lack access to effective treatments. There is a need for further research into anti-inflammatory strategies for inherited retinal degeneration.

    Intravitreal Adalimumab in Retinitis Pigmentosa: A Prospective Pilot Study Assessing Ocular Safety and Feasibility · 2026 · DOI

  • The results do not establish a clinically specific or causal relationship, and further studies incorporating clinically validated uveitis phenotypes are warranted to clarify this association. Also, causality cannot be inferred from this study, and further prospective and mechanistic investigations are warranted to clarify the underlying relationship.

    Human papillomavirus infection and the risk of uveitis: a propensity-score-matched electronic health record study · 2026 · DOI

  • As Colucciello noted, the etiology of ARPE remains incompletely understood; however, it is widely hypothesized to have an inflammatory origin, potentially provoked by viral infections or immune system dysregulation.

    ARPE – acute retinal pigment epitheliitis as a rare inflammatory disorder of the retina · 2026 · DOI

  • The reviewed studies show substantial variation in the prevalence of ocular symptoms. Limitations of many analyses included small sample sizes, lack of control groups, and retrospective study design. The discrepancy in the prevalence of ocular symptoms likely results from methodological differences.

    Ocular manifestations of COVID-19: a systematic and narrative literature review · 2026 · DOI

  • The review highlights the need for further prospective studies to elucidate underlying mechanisms, prevalence, and long-term consequences. The study emphasizes the importance of considering ocular symptoms in the diagnosis and management of COVID-19. The review highlights the need for ophthalmologic vigilance in patients with COVID-19.

    Ocular manifestations of COVID-19: a systematic and narrative literature review · 2026 · DOI

  • The study had a limited sample size. The achieved power (1-β) was 0.98 for PIV and 0.77 for SII at a significance level of 0.05.

    Diagnostic and Potentially Prognostic Value of Novel Inflammatory Indices in Non-Arteritic Anterior Ischemic Optic Neuropathy · 2026 · DOI

  • The pathogenesis of NAION remains incompletely understood. The predictive value of inflammatory markers in NAION is not well established.

    Diagnostic and Potentially Prognostic Value of Novel Inflammatory Indices in Non-Arteritic Anterior Ischemic Optic Neuropathy · 2026 · DOI

  • Multiple evanescent white dot syndrome (MEWDS) is likewise included, although its pathophysiology remains debated, particularly regarding whether the primary target is the choriocapillaris or the photoreceptors.

    From white dot syndromes to primary inflammatory choriocapillaropathies (PICCPs): updating and expanding the spectrum through multimodal imaging · 2026 · DOI

  • The lack of longitudinal data. The limited understanding of the psychological burden of Behçet disease.

    Psychological Burden in Behçet Disease: A Narrative Review Across Mucocutaneous, Articular, and Ocular Manifestations · 2026 · DOI

  • Future research should prioritize prospective and multicenter studies. Studies should use clearer diagnostic and phenotypic characterization, standardized psychiatric and quality-of-life measures. Research should investigate the impact of mucocutaneous, articular, and ocular manifestations on patients' psychological well-being.

    Psychological Burden in Behçet Disease: A Narrative Review Across Mucocutaneous, Articular, and Ocular Manifestations · 2026 · DOI

  • While this supports the detection of CVA24v during the outbreak, it is insufficient to establish definitive causation, precludes analysis of viral diversity or within-outbreak transmission dynamics, and prevents conclusions regarding the role of CVA24v in outbreaks in other regions or at earlier time points.

    Detection of Coxsackievirus A24v during an acute haemorrhagic conjunctivitis outbreak in Dar es Salaam, Tanzania, January-February 2024 · 2026 · DOI

  • The present study augments this limited literature by reporting on a larger patient cohort with an extended follow-up period. However, published data on SPC remain scarce, and existing reports are limited by relatively short follow-up durations.

    Clinical characteristics and prognosis of solitary punctate chorioretinitis in Chinese patients · 2026 · DOI

  • There is a lack of comprehensive epidemiological characterization of uveitis in the elderly population. Prior studies have highlighted differing common diagnoses for uveitis in elderly patients.

    Epidemiological characterization of uveitis in the elderly population: a systematic review and meta-analysis · 2026 · DOI

  • Limited understanding of the molecular mechanisms underlying ATRA's effects on macrophage activity and systemic inflammation. Lack of effective therapies for managing cytokine storms.

    All-trans retinoic acid suppresses systemic inflammation induced by severe fever with thrombocytopenia syndrome virus in mice · 2026 · DOI

  • Limited evidence regarding the safety and efficacy of surgical management for NLDO in immunocompromised patients. Underrecognition of NLDO as a manifestation of ocular GVHD.

    Nasolacrimal duct obstruction following allo-HSCT: an overlooked manifestation of ocular graft-versus-host disease · 2026 · DOI

  • As a chronic inflammatory disease, its exact cause remains unclear, but genetic predisposition, immune dysfunction, and environmental factors are key contributors17–19.

    Upregulation of serum circular RNA FUNDC1 and TNF-α in Behçet’s disease: potential diagnostic biomarkers · 2026 · DOI

  • Idiopathic pediatric uveitis (IPU) is a leading cause of irreversible vision loss in children; however, the genetic and molecular mechanisms underlying this condition remain unclear.

    A Rare De Novo Missense Mutation in IFT122 Confers a Genetic Susceptibility Factor of Idiopathic Pediatric Uveitis Via Trio‐based Whole‐Exome Sequencing · 2026 · DOI

  • Although effective antiviral immunity is essential for controlling HSV-1 and limiting recurrent disease, the mechanisms regulating recruitment of protective lymphocytes to the ocular mucosa remain incompletely understood.

    Tissue-Resident and Effector-Memory Lymphocyte Recruitment to the Ocular Mucosa Requires CCL28/CCR10 Signaling During Recurrent HSV-1 Infection · 2026 · DOI

  • Future larger multicenter studies using multi-omics approaches are warranted to further elucidate the complex pathogenesis of PSS and develop more effective therapeutic strategies.

    Integrated pathogen detection and immune profiling in posner-schlossman syndrome: a metagenomic and cytokine approach · 2026 · DOI

  • There is a notable gap in understanding the health-related quality of life (HRQoL) impact on carers of people with XLRP, essential for holistic health economic evaluations.

    X-Linked Retinitis Pigmentosa (XLRP): An Investigation of the Impact of XLRP on Health-Related Quality of Life of Carers in Great Britain · 2026 · DOI

  • In addition, HLA typing, including HLA-B27 testing, was not routinely performed; therefore, the association between HLA-B27 and AAU could not be evaluated in this study.

    Pattern of uveitis in first-time patients at a tertiary referral center in Saitama, Japan · 2026 · DOI

  • The temporal relationship between uveitis and neurological relapses in multiple sclerosis (MS)–associated uveitis is poorly documented; and MS-targeted disease-modifying therapies (DMTs) may influence the ocular course.

    Clinical course of multiple sclerosis-associated uveitis: a retrospective series of 49 cases · 2026 · DOI

  • The difficulty in achieving definitive diagnosis of ocular tuberculosis due to the low sensitivity of culture and PCR from aqueous or vitreous humor. The importance of considering presumed ocular tuberculosis in the differential diagnosis of uveitis of uncertain etiology.

    Presumed Bilateral Ocular Tuberculosis in a Young Patient - Diagnostic Approach and Follow-Up: Case Report · 2026 · DOI

  • By integrating these pathways and molecular markers, we propose an updated mechanistic framework, including a conceptual model for the underexplored role of heparanase, and identify pathway-level targets with potential therapeutic relevance for HSK-associated CNV.

    Molecular Pathways Driving Corneal Neovascularization in Herpes Simplex Keratitis · 2026 · DOI

Most-cited papers in Ocular Diseases and Behçet’s Syndrome

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Open questions raised by papers listed on this page include: (1) There is a lack of broadly applicable treatments for retinitis pigmentosa (“Intravitreal Adalimumab in Retinitis Pigmentosa: A Prospective Pilot Study…”, 2026); (2) The results do not establish a clinically specific or causal relationship, and further studies incorporating clinically validated uveitis phenotypes are warranted to clarify this association (“Human papillomavirus infection and the risk of uveitis: a…”, 2026); (3) As Colucciello noted, the etiology of ARPE remains incompletely understood; however, it is widely hypothesized to have an inflammatory origin, potentially provoked by viral infections or immune system dysregulation (“ARPE – acute retinal pigment epitheliitis as a rare inflammatory disorder of…”, 2026); (4) The predictive value of inflammatory markers in NAION is not well established (“Diagnostic and Potentially Prognostic Value of Novel Inflammatory Indices in…”, 2026); (5) Future research should prioritize prospective and multicenter studies (“Psychological Burden in Behçet Disease: A Narrative Review Across…”, 2026). 92 gap statements have been mined from Ocular Diseases and Behçet’s Syndrome papers in our 4.5M-paper local library, which holds 526 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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