Check out the pages of our flip-book that will be presented at the 2018 Tucson Festival of Books! Each page dives into a different feature of the retina. The flip-book will help festival-goers understand the model of the retina that Sam and Lola are making!
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.
Digital health technology is an ever-growing field in this day and age. Companies have developed technologies to monitor physiologic data regarding blood sugar levels, nutritional trackers, sweat monitors, and more. The idea that you can conduct tests easier, faster, and in the comfort of your own home piques the interest of both physicians and patients.
Glaucoma is the second leading causes of blindness in the world today. Glaucoma is caused by a buildup of fluid called aqueous humor in front of the lens in our eyes. The build up is caused the eye producing too much of the fluid or by it not draining properly out of the drainage angle. The fluid build-up causes pressure to rise in the eye and the elevated pressure in the eye presses against the optic nerve. When there is long term pressure on the optic nerve, the nerves in it becomes damaged and slowly die causing blindness.
Marinko Sarunic, an engineer at Canada’s Simon Fraser University’s Biomedical Optics Research Group, has developed a high-resolution retinal imaging scanner. The scanner is only the size of a shoebox, but can produce extremely detailed images of the retina, akin to Google Maps.
Why is it important?
Heterochromia Iridis describes a condition in which there are different colors within the iris of an individual’s eye. This is caused by an excess or lack of production of pigmentation in the iris, which is called hyperplasia and hypoplasia, respectively. There are three main types of heterochromia, in which the pigmentation abnormality appears in different regions of the iris. There is central heterochromia, in which there is a ring of color surrounding the pupil that is a different color than the rest of the iris.
Visual researchers remain hard at work in their quest to find treatments for the various diseases and mutations that cause blindness. Recent techniques involve inserting light-sensitive proteins into the damaged retina via gene therapy, and using a virus to do so. This may be a surprise to many people as viruses are typically thought of as harmful entities to avoid; yet they can actually work to our advantage and may even be the beginning to treating some forms of blindness.
Age related macular degeneration (AMD) is characterized by a loss of central vision. As a person gets older, they are more at risk of getting AMD. While AMD has no known cure, there are treatments to slow its progress, one being a monthly injection administered directly into the eye.
This injection into the eye delivers the Anti-VEGF treatment to the back of the eye with a thin needle. Anti-VEGF drugs are the medications that are currently being used to treat AMD. They are a group of medicines that reduce new blood vessel growth on the retina.
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