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Related Concept Videos

Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
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Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
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In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
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Restorative care is provided once a patient has been discharged from a healthcare facility and requires additional services. The additional services include home care, rehabilitation programs, and extended care. Restorative care centers help the patient regain their previous level of functioning or acquire a new level of functioning due to the incapacitating effects of a disease or a disability. It aims to assist patients in enhancing their quality of life by encouraging independence,...

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Related Experiment Video

Updated: May 18, 2026

Sub-Retinal Delivery of Human Embryonic Stem Cell Derived Photoreceptor Progenitors in rd10 Mice
07:46

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Published on: October 6, 2023

Sight restoration.

Pawan Sinha1, Richard Held

  • 146-4077, MIT Department of Brain and Cognitive Sciences 77 Massachusetts Avenue, Cambridge, MA 02139.

F1000 Medicine Reports
|September 20, 2012
PubMed
Summary
This summary is machine-generated.

Restoring sight in children with congenital blindness offers unique insights into brain plasticity and visual development. Project Prakash aims to help these children while advancing scientific understanding.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Ophthalmology

Background:

  • Congenital blindness cases offer rare insights into visual development and brain plasticity.
  • Such cases are exceptionally uncommon in developed nations.
  • A significant public health challenge exists in treating curable blindness in children in developing countries.

Purpose of the Study:

  • To address the dual goals of improving public health and advancing scientific knowledge.
  • To investigate visual development and brain plasticity through sight restoration in children.
  • To present the Project Prakash initiative and its objectives.

Main Methods:

  • Describes the Project Prakash initiative, a public health and research effort.
  • Focuses on providing treatment to children with curable blindness.
  • Involves studying visual development post-intervention.

Main Results:

  • Early results from Project Prakash are presented.
  • Findings offer insights into the capabilities of the visual system and brain after prolonged blindness.
  • Caveats for interpreting the results are discussed.

Conclusions:

  • Treating curable blindness in developing countries presents a unique opportunity for scientific discovery.
  • Project Prakash demonstrates a model for simultaneously addressing societal needs and scientific inquiry.
  • Further research is needed with careful consideration of limitations.