The rates of preventable blindness in First Nations communities has halved but better housing is needed to eliminate trachoma.

Between 2011 and 2021, communities have seen the rates of trachoma among children aged five to nine drop from 7 per cent to 3.3 per cent.

The decline is the result of consultation with First Nations leaders and speaking to 280 eye care workers in 21 locations.

The consultations led to the Roadmap to Close the Gap for Vision.

While the drop in rates is good news, there is still much to do.

Cataracts, diabetes and refractive error are still major concerns and Alice Springs ophthalmologist Dr Tim Henderson says housing is a key priority if we want to eliminate trachoma.

Chief Executive of the Aboriginal Medical Services Alliance NT, John Paterson says housing should be the highest priority.

He told the ABC we need to avoid the current overcrowding where we have 25 to 30 people residing in a house with three bedrooms, one bath, one toilet.

Out of the 21 locations focused on, only three remain of concern.