/ /

  • linkedin
  • Increase Font
  • Sharebar

    Medical, surgical advances rising to challenge of persistent epithelial defects

    Experimental approaches also showing promise for promoting corneal epithelial healing


    Placement of a scleral lens has also demonstrated efficacy for healing PED. When using this technique, lenses of at least 17.5 mm diameter should be chosen since the smaller diameter, mini-scleral lenses do not completely vault over the cornea.

    The larger-diameter scleral lenses are available from a variety of manufacturers or as the custom-manufactured PROSE (Prosthetic Replacement of the Ocular Surface Ecosystem, Boston Foundation for Sight).

    Other advances

    Modalities under investigation for treatment of PED include thymosin beta 4 and a connexin43 antisense gel (Nexagon, CoDa Therapeutics)—both of which have shown promise in compassionate-use cases.

    Thymosin beta 4 is a synthetically produced copy of a 43-amino acid peptide that is found in most tissues and has been shown to promote corneal wound re-epitheliailziation, decrease inflammation, and inhibit apoptosis.

    The connexin43 antisense agent decreases the upregulation of connexin proteins that mediate bystander cell death (apoptosis induced by dying epithelial cells).

    Mesenchymal stem cells—which are autologous adipose-derived multipotent cells—and a variety of products derived from whole blood are also being investigated for promoting epithelial healing.



    1. Katzman LR, Jeng BH. Management strategies for persistent epithelial defects of the cornea. Saudi J Ophthlamol. 2014;28:168-172.



    Bennie H. Jeng, MD

    E: [email protected]

    This article was adapted from Dr. Jeng’s presentation during Cornea Subspecialty Day at the 2014 meeting of the American Academy of Ophthalmology. Dr. Jeng is a consultant to Jade Therapeutics, Kedrion, and Santen.



    New Call-to-action


    You must be signed in to leave a comment. Registering is fast and free!

    All comments must follow the ModernMedicine Network community rules and terms of use, and will be moderated. ModernMedicine reserves the right to use the comments we receive, in whole or in part,in any medium. See also the Terms of Use, Privacy Policy and Community FAQ.

    • No comments available


    View Results