If a drug selectively inhibited retinaldehyde regeneration within the retinal pigment epithelium (RPE), which consequence follows regarding vision?

💡 Explanation

Inhibiting retinaldehyde regeneration impairs the visual cycle, because this cycle is essential for replenishing rhodopsin in photoreceptors after exposure to light. Therefore, dark adaptation would be impaired, rather than enhanced acuity, because rhodopsin levels remain low.

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