The IGA was formed 40 years ago at King's College Hospital in London.
At that time, doctors at King's were keen to improve patient care and find out more about the practical issues associated with living with glaucoma.
Exploratory meetings with patients revealed that they too were eager to have a means of keeping in informal contact with eye specialists and fellow patients.
Many people were also motivated to find a way to improve the limited resources available for treatment and to encourage research into glaucoma.
At one of these meetings in 1974, the Glaucoma Association was officially formed and a council and officers appointed.
Building on King's College Hospital's well-established contacts with similar centres abroad, the organisation was soon renamed the International Glaucoma Association.
In 1978 the IGA became a Representative Member of the International Agency for the Prevention of Blindness.
In 1996 the International Glaucoma Association moved from the King's College Hospital site to offices nearby in Camberwell, South East London. Then in 2005, the organisation moved to its current location in Ashford, Kent.