BBC Radio Scotland this week highlighted that one in five people in Scotland suffers from binocular instability and yet few eye care professionals are trained to deal with it.
The investigation by journalist Shelley Jofre, broadcast on Monday June 4, was designed to reveal the devastating impact the condition can have and that while 20 per cent of Scots suffer from it, most don't realise.
According to the programme, the condition is not easily picked up by an eye test and many sufferers are told they have 20/20 vision despite the fact that they may experience eye strain from focusing on print or struggle to meet someone's eyes.
Nadia Northway, who runs the Visual Stress Clinic at Glasgow Caledonian University, explained that patients need to be referred to a trained orthoptist to spot the condition, but said that there was no longer a training facility for orthoptists in Scotland.
Referring to research she had been carrying out on adults with literacy problems, Northway said: 'As many as 80 per cent of people who have difficulty reading appear to have a problem with binocular instability and or visual stress.'