Simple vision – can only detect the difference between light and dark, and
maybe a few shapes.
Complex vision – what humans have
Lens – part of eye that bends light – needed for both simple and complex
vision
Focus – bending light to allow us to see detail, not just shapes
Image – the picture you see in your brain
The lens sends information to the brain (an important part of vision) to
understand what we see
The wax paper represents the lens of a simple eye.
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