Bionic eye that mimics how pupils respond to light may improve vision

A thin material sent nerve-like signals to an alloy fibre in an artificial eye model, causing the eye’s pupil to dilate and contract in response to varying light levels, which could one day help treat certain visual impairments

The creation of a bionic eye that mimics the widening and shrinking of the pupil may bring us one step closer towards helping people with certain visual impairments.

Light enters the eye via the pupil, before travelling to the retina at the back of the eyeball. The retina then converts the light stimuli into nerve impulses, which are sent to the brain for processing via the optic nerve.