Eyesight warning: The food eaten by millions that can cause 'blindness' – what to avoid

The report cautioned that nutrition-related optic damage should always be considered by doctors finding any patient with unexplained vision symptoms.

“The risks for poor cardiovascular health, obesity and cancer associated with junk food consumption are well known, but poor nutrition can also permanently damage the nervous system, particularly vision,” the report said.

“It is rare in developed countries. The condition is potentially reversible if caught early. But if left untreated, it leads to permanent blindness.”

Doctor Denize Atan, the study’s lead author, said: “Our vision has such an impact on quality of life, education, employment, social interactions, and mental health.