Incisional choroidal surgery.

Surv Ophthalmol

Chair Emeritus, Emory University, Atlanta, GA, Professor & Consultant, Mayo Clinic, Rochester, MN (2017-23), EyeMacular Regeneration, Inc., Rochester, MN, iMacular Regeneration, LLC, Rochester, MN; Mayo Clinic, Rochester Minnesota. Electronic address:

Published: August 2024

The choroid is a thin layer of highly vascular uveal tissue enclosed externally by sclera and internally by neurosensory retinal tissue. The choroid is a "middle layer" ocular tissue with anatomically challenging surgical access. The primary functional role of the choroid is to provide rapid, oxygenated, and nutrient-rich blood flow to both the highly metabolic retinal pigment epithelium and outer retina (i.e. photoreceptors) while simultaneously removing waste products. Historically, incisional choroidal surgery (ICS) has involved tumor biopsy or excision, removal of choroidal neovascular complex or autologous choroidal translocations; however, ICS also holds unique potential for novel and innovative approaches to address macular pathology. Using large-animal surgical studies, researchers have explored ICS with the objective of finding safer and more effective techniques to reduce surgical risks such as bleeding, tissue contraction, and scar tissue formation. We explore the relevant anatomy and embryology, existing surgical techniques, discuss the implications for retinal drug delivery, define ICS guiding principles, and offer a rationale for implementation of ICS into a vitreoretinal surgical practice. We also identify other future challenges and anticipate future innovations that will advance ICS.

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http://dx.doi.org/10.1016/j.survophthal.2024.08.002DOI Listing

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