Just like sighted people, a blind child must learn to develop his or her physical capacities.
At the entrance of the Exhibition Hall is a dark tunnel that serves as a reminder to sighted visitors to leave behind their dependency on vision in order to appreciate what lies ahead.
A group of blind men asked a sighted person to lead them.
His company, Traveleyes, pairs blind people with sighted travellers who, in return for a 25% discount on their holiday, act as guides.
It is his memory, above all else, that has enabled him not merely to compete with sighted ministers but to outperform them.
Some sighted people lose much of their eyesight as they age.
Mike Newman, 41, smashed the world land speed record for a car driven solo by an unsighted man, taking the title back from a sighted man with experience as a racing driver who set the record by wearing a blindfold.
The precautions taken to warn the public of the danger were adequate for sighted persons but not for the blind.
To a sighted person, reading Braille seems to be difficult and laborious, yet, intriguingly, Kleege describes it as natural and pain-free, and even skim reading is possible.
The scheme was originally thought up by Plymouth Argyle Football Club, who were the first club to set up a commentary to relay information to blind supporters by a sighted fan who sits next to them in the crowd.