http://www.cnn.com/2017/11/01/health/br ... index.html
Given the connection between the eye, the optic nerve and the brain, combined with the fluid shift astronauts experience, some research has suggested that the eyes act as a pressure release valve. But further study is needed.
Why is sense of taste affected? I had my sense of taste improved immediately after CCSVI treatment. Still a weird effect.This causes something known among astronauts as Bird Leg Syndrome, because the fluid shift causes them to have puffy faces and thin legs. It also makes them less thirsty, dulls their sense of taste and causes a "stuffy nose" feeling similar to allergies.