A recent study suggests that people with age-related macular degeneration, a common eye condition, could be at greater risk of getting infected and sick from COVID-19. Age-related macular degeneration (AMD) happens when aging causes damage to the macula, the part of the eye that controls one’s ability to see fine detail in objects and recognize…

Scientists at the University of California, San Diego, have developed a smartphone app that can detect early signs of Alzheimer’s disease and other neurological conditions. The app uses the phone’s near-infrared camera to track changes in the size of a person’s pupils at a sub-millimetre level. These measurements can then be used to assess that…

It can damage your vision, be harmful during pregnancy and may not initially cause symptoms. Take these steps to prevent infection, and greater care if you are pregnant. STORY AT-A-GLANCE Toxoplasma gondii is the parasite responsible for the infection toxoplasmosis. If the parasite reaches the retina, it causes ocular toxoplasmosis, with symptoms including lesions on…