Scientists grow human retinas and illuminate eye disease targets

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Retinal organoid at 291 days. Red and green cone cells are green in the photo, while blue cone cells are blue.

Scientists were able to grow human retinas from stem cells for 1 year, allowing them to mimic human fetal development of retinas and closely observe how color-detecting cells form.

Why it matters: The information they gathered could be used to prevent or treat eye diseases and disorders like glaucoma, macular degeneration, color blindness and eye problems from premature births, Johns Hopkins University scientists say in a new study published in Science Thursday.

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Contact lenses that give you telescopic vision

A prototype contact lens-and-glasses system that lets you zoom in on something to 2.8X magnification.

New contact lenses have been created that when paired with special spectacles, bestow telescopic vision on their wearers.  The contact-lens-and-spectacles combination magnifies scene details by 2.8 times.

 

 

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FDA Approves Eye Implant For Macular Degeneration

FDA Approves Eye Implant For Macular Degeneration

Implantable telescope for end-stage macular degeneration 

An advanced prosthesis developed by VisionCare Ophthalmic Technologies, for patients surfing with severe macular degeneration, has received a confirmatory approval from the FDA. This implantable telescope could be a new hope in vision restoration of patients on the receiving end from end-stage macular degeneration.

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Researchers Regrow Cells OF The Inner Retina

Researchers Regrow Cells OF The Inner Retina 

Cells in the retina of mice can be coaxed to create new neurons following an injury, according to new research from the University of Washington. This is the most definitive demonstration to date that such regeneration is possible, given the right cues, for a specific type of neuron in the inner retina of a mammal.

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Improved Retinal Implant Stimulates Neurons To Restore Sight

Improved Retinal Implant Stimulates Neurons To Restore Sight 
A new retinal implant sits mostly outside the eye. 

For many blind or partially sighted people, implants that stimulate healthy nerve cells connected to their retinas could help restore some normal vision. Researchers have been working on such implants since the 1980s but with only limited success. A major hurdle is making an implant that can stay in the eye for years without declining in performance or causing inflammation.

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Genetic Link Found To Common Form Of Macular Degeneration

Genetic Link Found To Common Form Of Macular Degeneration 

Age-related macular degeneration is the leading cause of blindness in people over the age of 65, and it affects more than 10 million people in the United States. The disease erodes the macula, the center of the retina, slowly eclipsing central vision and potentially causing blindness. Currently, there is no treatment for dry macular degeneration, the most common form, in which more and more cells within the macula slowly die off.

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Protein That Can Reverse or Prevent Macular Degeneration

Macular Degenerate Disease

Two major eye diseases and leading causes of blindness—age-related macular degeneration and diabetic retinopathy—can be reversed or even prevented by drugs that activate a protein found in blood vessel cells, researchers at the University of Utah School of Medicine and several other institutions have announced in a new study.

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