I recently joined the open-source federated social network Mastodon in a group with like-minded medical people on the med-mastodon.com server. I can be found there as @iguy@med-mastodon.com from any mastodon server you choose to join.
Optomap (Optos Retinal Image)
Optos ultra-widefield retinal imaging (also called an Optomap image) is a special picture of the back of your eye. It helps eye doctors find and treat eye problems that can start in the outer edges of the retina. Some of these problems can be hard to see with regular eye exam tools.