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Gene therapy is designed to insert a copy of a corrected gene into retinal cells. The hope is to return cell function back to normal and the treatment has the potential to stop disease progression. This therapy will not restore impaired vision back to normal. The research is being undertaken by a partnership between Sanofi and Oxford BioMedica.
Optogenetics also necessarily includes the development of genetic targeting strategies such as cell-specific promoters or other customized conditionally-active viruses, to deliver the light-sensitive probes to specific populations of neurons in the brain of living animals (e.g. worms, fruit flies, mice, rats, and monkeys).
Retinitis pigmentosa (RP) is a member of a group of genetic disorders called inherited retinal dystrophy (IRD) that cause loss of vision. [1] Symptoms include trouble seeing at night and decreasing peripheral vision (side and upper or lower visual field). [1]
The brain and eyes, for example, can be significantly impacted by mutations in this gene and cause disorders such as Microphthalmia and Holoprosencephaly. [39] Microphthalmia is a condition that affects the eyes, which results in small, underdeveloped tissues in one or both eyes. [ 39 ]
Leber's hereditary optic neuropathy (LHON) is a mitochondrially inherited (transmitted from mother to offspring) degeneration of retinal ganglion cells (RGCs) and their axons that leads to an acute or subacute loss of central vision; it predominantly affects adult males, and onset is more likely in younger adults.
Color vision deficiencies can be classified as inherited or acquired. Inherited: inherited or congenital/genetic color vision deficiencies are most commonly caused by mutations of the genes encoding opsin proteins. However, several other genes can also lead to less common and/or more severe forms of color blindness.
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Waardenburg syndrome is a group of rare genetic conditions characterised by at least some degree of congenital hearing loss and pigmentation deficiencies, which can include bright blue eyes (or one blue eye and one brown eye), a white forelock or patches of light skin.