Actually I have kept my eyes open for about four minutes, but I had contacts in. With out contacts in I can only keep my eyes open for 45 seconds.
For as long as the customer wants it to be kept open.
It usually takes two weeks for them to open their eyes!!
They open their eyes at about 2 weeks old.
It takes about 2-3 weeks for a baby cat to open it's eyes.
All short-haired cat open their eyes at 5-8 days and long-haired cats open their eyes at 10-14 days.
Two weeks
Well, on average, newborn pups open their eyes at about 2 weeks.
6 weeks
over a year
about 3 weeks to grow and a week to open eyes
If your eyes are kept open for a long time because of lack of sleep, it prevents the cornea [the surface of your eye] from being well lubricated, which can cause dryness and redness.
It takes 2 weeks for any breed of puppy eyes and ears to open.