Restore Vision Centers Reviews | No Eye Glasses Help

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Rotarians work together to restore sight to the blind in Ghana …

Dr. Albert Alley, director of the World Blindness Outreach, and six villagers who received free cataract surgery during the mission.

Dr. Albert Alley, director of World Blindness Outreach, and six villagers who received free cataract surgery during the mission.

By Sue Carlson, M.D.

“Medase me adamfo” is Twi for “Thank you, my friend.”

We heard and said these words many times on our recent medical mission to Apam, Ghana, 4-11 May.

We heard them from the 87 patients who received cataract, pterygium, or glaucoma surgery, and from the patients’ family members, hospital personnel and administrators, and village elders. And we said them to everyone who worked so hard to make our trip a success, and to the patients who trusted us with their eyes and their hopes for better vision.

The goal of the mission was “to treat preventable and correctable blindness and eye disease.” Rotarians from District 9100 (Ghana) and 7390 (Pennsylvania, USA) spent 11 months organizing the trip in partnership with World Blindness Outreach. The medical mission involved two Rotary districts and five Rotary clubs (Accra, Apam, Lebanon, Manheim and Lancaster Sunrise) working with World Blindness Outreach and host ophthalmologist Dr. Boateng Wiafe. The entire team was pleased this first mission to Apam was successful.

A highlight of the mission was visiting six of our patients in their remote outlying village.  Sister Veronica, St. Luke Catholic Hospital ophthalmic nurse, drove us the 45 minutes over dirt roads to the tiny village. We were welcomed into the home of three siblings, a brother and two sisters. They, and three others from the village, had been blind with very advanced cataracts, and were unable to afford cataract surgery.  (Health Insurance in Ghana covers doctor’s appointments, medications, and surgeries. It costs US$10 a year, out of the reach of many.)

Because of our mission, all six were able to receive the surgery at no cost, and to regain their sight. The brother was so happy with the surgery on his first eye that he begged to have the second eye done. As we were taking photos of our patients, many of their neighbors came to help celebrate. They were all jumping up and down chanting their “Medase!” (“Thank you!”)  You can see this on a video we uploaded to YouTube.

We were struck by the writing over the family’s front door: “Oh!  I’m alive.” The conditions of the home and the village were so modest that it is hard to imagine the difficulties of life there. How wonderful and humbling to know that we were able to ease some of the struggles.

Retinal Prostheses: Restoring Vision to the Blind | Knowing Neurons

Vision is arguably one of our most important senses.  We rely on it to recognize color, shape, movement, distance, and perspective about the world around us.   Although all parts of the eye help us perceive our environment, the most vital part is the retina, the thin layer of tissue that lines the back of the eye.  This structure contains several layers of cells interconnected by synapses.  When light enters through the eye, it passes all the way through the retina, until it is captured by photoreceptors.  These cells then convert the light energy into tiny electrochemical impulses, which are processed by retinal neurons, before the signal is sent to the brain.

EyeRetina

Loss of vision can have a huge impact on a person’s life.  One particularly devastating disease, retinitis pigmentosa (RP), affects 1 in 400 people in the United States.  Those affected by RP progressively lose their vision, beginning with night blindness, then loss of peripheral vision and eventually complete loss of all vision.  Research into this disease has revealed that blindness occurs because the photoreceptor cells degenerate while the rest of the cells remain relatively unaffected.  Because the rest of the retina is mostly functional in RP, scientists and biomedical engineers reasoned that prosthetic devices may be able to activate the retina similar to the way that photoreceptors do and partially restore vision.

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Three months ago, the FDA approved the use of the first retinal implant in the United States.  This enormous achievement is thanks to over 20 years of research, two clinical trials, and over $200 million in funding from the National Eye Institute, the Department of Energy, the National Science Foundation, and private investors.  The ARGUS II Retinal Prosthesis System by Second Sight Medical Products, Inc. is an exciting success that gives hope to people who are blinded by retinitis pigmentosa.

argus-II-operation

ARGUS II is a biomedical implant consisting of both intraocular (inside the eye) and extraocular (outside the eye) components.  In this system, a patient wears a pair of glasses that has a camera mounted on it.  The camera captures images of what the patient sees and the images are sent to a visual processing unit (VPU) that the patient wears on his or her belt.  The VPU then converts the camera image into a digital code.  This code is sent wirelessly to electronics that are implanted on the outside of the eye.  These electronics decode the information to produce a pattern of stimulus pulses that are then transmitted to electrodes that are arranged on the patient’s retina.  The electrodes stimulate the surviving neurons in retina in a way that represents the image that the camera captured, thus bypassing the first step of visual processing.  When these neurons are stimulated, they send signals to the brain that allow the patient to perceive their surroundings.

ARGUS II restores functional vision, but it is not the same as natural vision seen by patients before blindness.  It is described as “somewhat pixelized” with spots of light covering a small region of the visual field.  Even with its imperfections, some patients with the device are able to perform tasks such as discerning forms, identifying large written characters, and identifying objects such as light sources.

The technology is long away from enabling the patient to see like normally sighted individuals. Nevertheless, it is giant leap from being able to see nothing!

FeatureImageArgusII

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References:

Images adapted from Webvision, the National Eye Institute, Gadget Review, and made by Ryan Jones

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Written by Navya S. Davuluri

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Maintain Good Vision By Performing Regular Eye Exams At Optical …

Keeping our eyes functioning at peak performance is possible by having a regular eye exam at optical Columbus. By using technologically advanced equipment, optical Columbus provides eye exams that give a complete and accurate analysis on your eyes’ health.

Professional optometrists can detect any changes to the eye and whether there are issues that require referral or are benign. Certain more grave conditions include cataracts, glaucoma, macular degeneration, diabetic retinopathy and dry eye that have a better chance of recovery with early diagnosis. Many eye examinations just look at the surface of the eye for changes, whereas many conditions can happen at the back of the eye, the retina. Optical Columbus has technology that gives a quick, painless retinal scan to determine the eye’s state.

Getting an eye test at optical Columbus is as simple as calling or going online. It is never a good idea to wait until there is a problem with your eyes before arranging an exam, as early detection of an irregularity is beneficial. As we get older so do our eyes, and vision becomes affected and we develop near-sightedness or farsightedness, perhaps with astigmatism. Youth, even infants, would benefit by an exam from optical Columbus to test for focusing, object tracking, depth perception and congenital defects. Vision accounts for up to 80 per cent of a child’s learning, and approximately 3 out of 10 children need some kind of vision correction.

In most situations, corrective eyewear answers any issues identified in an eye exam. Optical Columbus has a wide range of glasses and contact lenses that restore good vision and can be fashionable as well. You can choose frames from major manufacturers in-store, or from the convenience of your home online. There have been many technological breakthroughs in eyewear, including having bifocals without lines, or the wavefront lens that automatically changes to light and environmental conditions.

For eye tests and eyewear needs, contact optical Columbus by phone or online to give your eyes optimal care.

Learn further info about this matter by clicking optical Columbus Ohio and also visit to Northwest Vision Center.

Restore Vision Center Renton | Get Eye Test

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Can stem cells restore vision in retinal degeneration? – eye disease …

rp eye disease Researchers are applying stem cell transplantation to problems of photoreceptor preservation and replacement. Such an approach holds promise in the setting of disabling conditions such as retinitis pigmentosa (RP) and age-related macular degeneration (AMD).

Henry Klassen, M.D., Ph.D. is a professor of Ophthalmology at the University of California, Irvine, and the lead scientist in the multi-institutional Retinal Regeneration Program.

Duration : 1:13:25

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