Dubbo's Sue-Ellen Lovett suffers from the hereditary eye disease retinitis pigmentosa which is also known as tunnel vision.

She told the Wollondilly Advertiser she had filed a series of complaints with the Australian Human Rights Commission and Wollondilly Council after three businesses attempted to deny her entry with her guide dog two weeks ago.

She said she was asked to leave one premises, eat outside at another and, on a third occasion, was told her guide dog Prada needed to sleep outside the room in which she was staying.

Ms Lovett said all three incidents occurred in less than a six-hour period.

"It's appalling," she said.

"We're not in the dark ages.

"I've had a guide dog for 32 years and my guide dog is extremely well behaved."

Ms Lovett, who competed in the 1996 Paralympian Atlanta Games, the 1999 Paralympian World Equestrian Games in Denmark and the 2000 Paralympian Sydney Games, said she had travelled Australia "extensively" and visited other parts of the world.

She said she had never been exposed to treatment like her experience in Wollondilly.

"I've been to the Human Rights Commission and I'm taking action," she said. "I just need people to think and be aware."

Australian Human Rights disability discrimination commissioner Graeme Innes said it was unlawful for a person to refuse a guide dog entry to a public premises.

He said the Human Rights Commission attempted to resolve complaints by conciliation and most investigations took about six months.

Wollondilly Council ageing and disability project officer Gay Hardwick said it was illegal for a business to refuse a person and their guide dog access. "It's embarrassing for a person to be told they can't come in," she said.

She said the council had visited and provided information packs for each of the businesses involved.

A Guide Dogs NSW/ACT study recently found that one in four people surveyed were not aware guide dogs were allowed into restaurants, cafes, hotels and clubs.

For a free Guide Dogs Welcome Here information kit visit guidedogs.com.au or call 9412 9300.