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Eyes and ears are closely intertwined vital sensory organs, as auditory stimuli are usually interpreted alongside visual input. Normal vision is supported by vitamin B2 and zinc and the maintenance of normal connective tissues (including nerve fibres) is supported by copper and manganese. Hearing depends on the normal functioning of the nervous system and protection against oxidative stress, both of which are supported by vitamins and minerals such as the vitamins B2, C and E, zinc and selenium, amongst others.
As a sensory organ, the eye's role is to detect light, which enables us to see. The integrity of the retina is therefore crucial, as it contains light-sensitive cells, cones and rods, along with the optic nerve pathways. Intact, well functioning retinas ensure that signals reliably reach the brain's visual center, where they are translated into visual perceptions.
The ear is made up of the outer, middle and inner ear and the auditory nerve, which is responsible for processing sound waves and converting them into acoustic perception via the brain, presenting to us as sound.