The Royal National Institute of Blind People (RNIB) won the 'Campaign of the Year' award at the 2009 Scottish Charity Awards in Edinburgh.
It is the third year in a row that the charity has won an award in the competition organised by the 'Third Force News' magazine.
RNIB's efforts to win the higher mobility rate of disability living allowance for people with severe sight loss succeeded in persuading the Government to amend the eligibility regulations from 2011. The move will give up to £29 a week more towards mobility costs.
A centrepiece of the RNIB campaign was a giant 'maze' it constructed in Glasgow's George Square last February. Members of the public were invited to find their way around the maze's interior blindfolded. The event won widespread media coverage.
The maze also made an appearance at the Scottish Labour Party conference in Dundee the following week, when politicians such as Harriet Harman and James Purnell took part.
Accepting the award, John Legg, director of RNIB Scotland, said: "We are absolutely delighted that RNIB has won this award for campaign of the year. Engaging directly with the public, as well as politicians, was key to our campaign's success. The Third Force News award is something of a gold standard among Scottish voluntary organisations and it is a great honour to win again this year.
"But the real prize for us was winning a change to Government rules that will help to end the isolation and exclusion faced by so many people with severe sight loss."
Also present at the awards ceremony was Stirling MP Anne McGuire, a former Disabilities Minister, who was thanked by RNIB for her help in securing a higher rate Disability Living Allowance.
Mrs McGuire said: "Although these are difficult times, it is crucially important that Government continues to ensure a focus on social justice."