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Key facts about the eyes

October 9 was World Sight Day.

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by WILLIAM WANYOIKE

Infographics13 October 2025 - 15:46
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In Summary


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    Key facts about the eyes/WILLIAM WANYOIKE


    The human eye contains over 2 million working parts that help process visual information.

    The cornea is the only part of the body without blood vessels—it gets oxygen directly from the air.

    Each eye has about 120 million rods for night vision and 6 million cones for colour detection.

    The average person blinks between 15 and 20 times per minute to keep the eyes moist and clear.

    About 80 per cent of all learning is processed through vision, making eye health vital for development.

    Eyes heal quickly—minor corneal scratches can recover in about 48 hours.

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