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However, there is limited knowledge on epithelial barrier dysfunction in ocular allergy (OA). Since the ocular surface is directly exposed to the environment, it is important to understand the role of ocular epithelia and their dysfunction in OA. Impaired epithelial barrier enhances allergen uptake, which lead to activation of immune responses and development of chronic inflammation as seen in allergies. Abnormal expression of tight junction proteins that helps to maintain epithelial integrity has been reported in OA but sufficient data not available in chronic atopic (AKC) and vernal keratoconjunctivitis (VKC), the pathophysiology of which is not just complex, but also the current treatments are not completely effective. This review provides an overview of studies, which indicates the role of barrier dysfunction in OA, and highlights how ocular barrier dysfunction possibly contributes to the disease pathogenesis. The review also explores the potential of ocular epithelial barrier repair strategies as preventive and therapeutic approach.<\/jats:p>","DOI":"10.1111\/all.15174","type":"journal-article","created":{"date-parts":[[2021,11,10]],"date-time":"2021-11-10T15:55:01Z","timestamp":1636559701000},"page":"1360-1372","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":80,"title":["Epithelial barrier dysfunction in ocular allergy"],"prefix":"10.1111","volume":"77","author":[{"given":"Neera","family":"Singh","sequence":"first","affiliation":[{"name":"ProCyto Labs Pvt. Ltd. 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