Children with short-sightedness are being stopped from using NHS vouchers to help pay for new treatment unlike in other parts of the UK, Northern Ireland optometrists have said.
The chair of Optometry NI, Brian McKeown, said it was "frustrating" and that the rules should change, while Faith Donaldson, a County Down-based optometrist, said advances in medicine can now "slow down the progressions of myopia".
However, the Department of Health said the "evidence is not yet sufficient to support funded use".
Myopia, which is the medical term for short-sightedness, is an extremely common eye condition that affects about one in three people in the UK.