Which mechanism critically enabled Ibn al-Haytham's accurate modeling of human vision in the 11th century?

💡 Explanation

When Ibn al-Haytham mathematically traced light ray paths, it helped him deduce how the eye perceives images because he understood light travels rectilinearly connecting object points to the eye. Therefore, mathematical ray tracing was critical, rather than precise lens grinding, automata, or new elements, which are unrelated given vision properties.

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