A researcher applies a drug that selectively blocks retinal ganglion cells' adaptation mechanisms. If a subject then moves from a dark room into bright sunlight, which consequence follows?

💡 Explanation

Photophobia and temporary blindness occur because retinal ganglion cell adaptation, which normally adjusts sensitivity to changing light levels, is blocked by the drug, therefore the sudden bright light overwhelms the unadapted retina, rather than allowing for a gradual transition in sensitivity.

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