Automatic selection of video frames for hyperemia grading

Abstract

Hyperemia, also called erythema or conjunctival injection, is the occurrence of redness in the conjunctiva. It is produced by the engorgement of conjunctival blood vessels, as blood accumulates and gives the tissues a red coloration. Depending on factors such as how strong the coloration is and where it is located, hyperemia serves as an indicator of the presence of several pathologies; some examples are allergical conjunctivitis, dry eye syndrome, or contact lenses complications. Hyperemia level is, therefore, a relevant parameter for diagnosis in Optometry.