Why can’t an eye transplant cure blindness?
In: Biology
Think of it like a string of Christmas lights. One bulb goes out and they all go out, then you have to track down that one bulb that’s causing the problem to get them to all work.
With vision it may not be the eye that’s the problem, maybe it’s the optic nerve, the lateral geniculate nucleus, the optic tracks, or occipital lobe. Lesions in any of these areas can lead to blindness.
Most of the common causes of blindness do happen in the eye itself, (glaucoma, cataracts, diabetic retinopathy, etc), but like others have said we still can’t re-attach the optic or occulomotor nerves that would allow an individual to see normally if they were to receive an eye implant. Maybe sometime in the future, but not yet.
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