If it is true that...

Premature babies are often given extra oxygen, which tends to cause vasoconstriction by displacing carbon dioxide

and

Supplemental oxygen without carbon dioxide causes vasoconstriction, reducing the tissues' supply of glucose as well as oxygen and damages the retina when combined with too much light

Then it must be true that...

Retinopathy of prematurity has blinded tens of thousands of people

If it is true that...

Supplemental oxygen without carbon dioxide causes vasoconstriction, reducing the tissues' supply of glucose as well as oxygen and damages the retina when combined with too much light

and

Bright light contributes to retinal damage in babies

Then it must be true that...

Retinopathy of prematurity has blinded tens of thousands of people