Eyesight

Mark Long is running the 'Fan Dance' trail on Pen y Fan to raise money for Guide Dogs UK.

Andy Johnson is losing his sight due to a condition called retinal dystrophy.

Andy, who has retinal dystrophy, initially had avoidance anxiety and "wouldn't cross a road, wouldn't take the kids to school".

After living with a degenerative eye condition, Ann Mallett had a "life-changing" cornea transplant.

Nicki's eye had collapsed in on itself, but a new gel injection method has saved her vision.

Researchers at two universities are working on a study to slow the progression of short-sightedness.