For example, laser surgery to substantially improve eyesight costs a third of what it did a decade ago.

FORBES: Sick Solution

As I still attend the eye clinic at the Queen Victoria Hospital at East Grinstead, and as the success rate increases and the technology moves further ahead, I am very optimistic that my eyesight will improve even more -- and more and more people will regain their sight.

CNN: Sight saved by stem cell surgery

The other court challenge in 1985 involved Julie Christofferson-Titchbourne, a defector who argued that the church had falsely claimed that Scientology would improve her intelligence, and even her eyesight.

NEWYORKER: The Apostate

The RAIB also said it appeared that Mr Mackay was not wearing spectacles to improve his distance vision as he was advised at eyesight examinations in 2006 and 2009.

BBC: Eyesight 'a cause' in fatal crash at level crossing