Tears: The first line of defence, they also serve as lubrication by keeping the eyes moist and nourished; they also have a corrective lens function.
Eyelids: Their main job is to protect your eyes from dirt, dust and harsh light.
Eyelashes: A protective net for your eyes.
Cornea: A refractive zone that guides light to reach the retina.
Pupil: Controls the amount of light that enters your eyes.
Lens: A refractive zone that also guides light into the retina.
Retina and Optic Nerve: A bunch of intricate wiring that carries vision signals between your brain and eyes.
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