The new coronavirus (SARS-CoV-2) penetrates not only from the oral nasal cavity but also from the eyes.
A group of Sichuan University, Chengdu, China has proposed a method for coating contact lenses with Griffithsin, a mannose-bonded lectin.
It may be easy and effective as a way to use lectins.
https://www.frontiersin.org/articles/10.3389/fpubh.2020.599757/full