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Man Faces Blindness, Tackles SAS Mountain Challenge
22 Apr
Summary
- Mark Long was diagnosed with a genetic disorder causing vision loss.
- He is undertaking the 15-mile SAS Fan Dance challenge in Wales.
- The event raises funds for the Guide Dogs charity.

Mark Long, from Paulton in Somerset, has been diagnosed with retinitis pigmentosa, a rare genetic disorder that will lead to blindness. He received the diagnosis at age 12, with doctors predicting vision loss by 16. While he didn't experience significant sight impairment until his 40s, he now has limited vision in his right eye and has lost useful vision in his left.
Despite the prognosis, Long is embarking on the arduous 15-mile SAS 'Fan Dance' challenge on Pen y Fan in Wales on May 2nd. This rigorous event mirrors a Special Forces selection test. He is undertaking this to raise money for the Guide Dogs charity through his 'Pounds for Penny' campaign, aiming to fund a guide dog for its entire life. He emphasizes the critical role of public generosity in supporting Guide Dogs.
Long views sharing his experiences as crucial for coping with his condition, acknowledging the rewarding moments he has experienced, including seeing his daughters' faces. He aims to raise £102,000 for the charity. Guide Dogs UK has praised his efforts, anticipating strong support for his challenge.