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. 2021 Jul 27;6(1):e000842. doi: 10.1136/bmjophth-2021-000842

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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(A) Slit lamp photo of the left eye demonstrating an ocular surface squamous neoplasia with gelatinous features on the temporal aspect of the conjunctiva and limbus (arrow heads). (B) High-resolution anterior segment optical coherence tomography image of the inferior temporal conjunctiva and limbus demonstrating a thickened and hyper-reflective epithelium (asterisk) and an abrupt transition between normal and abnormal epithelium (arrowhead). Inset denotes anatomical location of scan. (C) Slit lamp photo of the left eye after 2 months (two cycles) of topical 5-fluoruacil treatment with clinical tumour resolution. (D) High-resolution anterior segment optical coherence tomography image of the inferior temporal conjunctiva and limbus demonstrating tumour resolution with thin, normalised epithelium (asterisk) after 2 months (two cycles) of topical 5-FU treatment. Empiric treatment was continued for the full four cycles. Inset denotes anatomical location of image. 5-FU, 5-fluorouracil.