Retina News

Visual Prosthesis Part Two

Submitted by lianarh on Sun, 10/22/2017 - 16:02

Glasses, contacts, and intraocular lenses can correct a variety of issues, as discussed in Visual Prosthesis Part One. There are other areas in the visual pathway where damage can result in visual impairment. More advanced technologies may be required to help correct them. Some examples of these technologies include retinal implants, BrianPort, and vOICe.

Visual Prosthesis Part One

Submitted by lianarh on Sat, 10/21/2017 - 11:21

Damage can arise from a variety of issues in the visual pathway, affecting structures from the eyes to the visual cortex of the brain. The resulting impairments can change the way a person navigates the world. There are long standing systems in place as alternatives for those who are visually impaired, such as glasses, braille, and walking sticks.

Healthy Foods = Healthy Eyes

Submitted by keerthikurian on Fri, 10/20/2017 - 10:03

Pyramid chart of different foods that are healthy for the eyes.

We all know this- eating healthy is good for our body in many ways. However, when it comes to our eyes, a lot of people seem to take them for granted. Our eyes let us see and experience the world, but we rarely think to take care of them. There are many antioxidants we can add to our diet to keep our eyes healthy.

Japanese man is first to receive reprogrammed stem cells from another person.

Submitted by keerthikurian on Sun, 10/01/2017 - 18:23

On March 28, 2017, a 60 year old Japanese man became the first person to receive reprogrammed stem cells from another person.

 

Stem cells are cells that have not differentiated into a specific function yet. Essentially, these cells can become any type of cell- a muscle cell, or a retinal cell. Typically, stem cell donations are used to treat different diseases that damage pre existing cells.

 

Want to see Ultra Violet light? We might be able to make that happen.

Submitted by pazm1 on Thu, 09/14/2017 - 20:16

Human have three receptors, called cones, in our eyes that allow us to see the world in color. They sense three wavelenghts of light the best: blue light, green light, and red light. Just like in primary school where we learn that when we mix white and red we get pink paint, our brains use the mixture of signals that are received from those cones to make the colors that we see every day. The reason why we cannot see ultra violet light or infrared light is because we do not have the cones that would allow us to do so.

Are Cells in the Retina Causing Abnormal Sleeping Patterns in Alzheimer’s Disease?

Submitted by lianarh on Thu, 09/07/2017 - 13:22

There are unique cells in the retina called melanopsin retinal ganglion cells. These cells do not assist in the formation of images in our brains. Instead, they send messages to a brain region called the suprachiasmatic nucleus that is located in the hypothalamus, concerning the brightness of the world around us. These signals provide information that contributes to our circadian rhythm. The circadian rhythm is our internal clock that tells the body when it is time to sleep and wake up.

Re-Growing the Sense of Sight

Submitted by laurenplozano on Wed, 09/06/2017 - 16:24

Wouldn’t it be cool to be able to regrow a limb if you lost it? What about if you could regain vision if you lost the structure or “limb” in the eye that is responsible for your sense of sight? In recent research done by the National Eye Institute of the National Institute of Health, Müller cells were discovered to grow into interneurons, brain cells that transmit information to other brain cells, when the eye experienced injury from trauma or disease.