I've always thought our eyes adapted to dark quicker than "a few minutes" Centaurus.
The human eye becomes more sensitive when we move from light to dark areas. This is called dark adaptation, and it is what we notice when we go into a dark movie theater. It is also what we experience when we are suddenly in the dark after a power failure. We gradually see better as our eyes adapt to darkness. The pupils widen to allow more light into the eye. The rods and cones in our retinas become six times more sensitive after 1 minute in darkness than they are after the few first seconds. After a half hour, they are even more sensitive. This increasing sensitivity continues for over 8 hours, when the eye reaches its maximum sensitivity to darkness and light.
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I believe it to still be a good practice to dim cabin lighting prior to T/O & landing.
Cheers
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