Light activates receptor cells in the A. iris B. retina C. optic nerve D. cornea 💾 Save the Page as PDF: 📥𝐃𝐨𝐰𝐧𝐥𝐨𝐚𝐝 𝐍𝐨𝐰! Related Read more articles Previous PostIn human visual system, light is focused by Next PostThe muscle fibers of the iris can increase or decrease the amount of light entering the eye by expanding or contracting the If the aforementioned Answer is Wrong. Leave a Reply with an authentic source.Cancel reply