For years researchers have known that the bacteria, fungus, and other microbes that live in and on our body are often beneficial for our health, but until now there has been no proof that there are any that lived in the eye. Scientists with the National Institutes of Health's National Eye Institute published a paper, in Immunity, on Corynebacterium mastididis (C. mast) which has been found to be a resident commensal bacteria in mice eyes.
Wet Age related macular degeneration (AMD) is an issue in which new blood vessels grow in the choroid layer (right outside of the retina). These blood vessels are weak and leak fluid which gets into the layers of the retina and macula. The macula is a pigmented area near the center of the retina. The macula is responsible for central vision.
A few questions may come to mind when you see this picture and we’re here to answer them!
What’s on Sam’s face?
Sam has electrodes on her face that are used to detect electrical signals.
Why is Sam measuring electrical signals on her face?
You would think that if a person managed to survive Ebola that it would be the end of the disease. Unfortunately, that is not the case. There are some persistent medical effects on their bodies including joint pain, headaches, and uveitis. The 2014-2016 outbreak of Ebola in Africa was the largest number of cases we had ever seen before since Ebola was recognized. The improved techniques with dealing with Ebola meant we also now have the largest number of survivors ever recorded.
Obstructive Sleep Apnea (OSA), is a condition that is highly prevalent in today's society. It is a chronic disorder associated with shallow or paused breathing, and snoring during sleep, and sleepiness dring the day.
Everyone will develop cataracts in the later part of their lifetime. The eyes’ natural lenses, responsible for working with the cornea to refract or bend light for optimal sight, becomes rigid and cloudy with age as the proteins within degrade and clump together. Refractive surgeries have allowed ophthalmologists to remove cataracts- allowing millions of people, typically adults over 60 years old, to regain clear sight.
Across the world, there are an immense number of species that have all sorts of similarities and differences. There are many ways to categorize these species based on their attributes. You may notice that they can be categorized by whether their eyes appear on the sides of their head or on the front of it. For example, animals such as horses and goats have their eyes on the sides of their heads, where tiger and human eyes face forward. Have you ever wondered why this might be?
When light hits the retina, signals are sent downstream into the brain. They follow a pathway that leads into the visual cortex, where they can be interpreted. The neurons that follow this pathway are highly organized in such a way that provides a retinotopic map that can be followed from the retina all the way to the visual cortex. Retinotopic map refers to the traceable organization of these neurons.
Eye shaving is exactly what it sounds like. The barber will take a razor or sharp knife and scrap the eyelids of their clients with these instruments.