The 31st annual meeting of the Cogan Ophthalmic History Society was March 23-25, 2018, in Tampa, Florida. The 2018 meeting will take place in Washington, D.C., March 15-17, 2019. The 2020 meeting will take place in London, England, June 4-7, 2020. For information about the meetings or membership in the Cogan Society, contact Society President Danny H.- K. Jokl at dhj6@cumc.columbia.edu.