If it is true that...

The absence of bright light can create a progesterone deficiency and leave estrogen and prolactin unopposed

Then it must be true that...

Darkness is a stress because it impairs mitochondrial energy production

If it is true that...

Retinal injury is caused by ordinary light when the eyes are sensitized by melatonin, prolactin, and polyunsaturated fats

and

Melatonin and prolactin are induced by stress

and

Darkness is a stress because it impairs mitochondrial energy production

and

Polyunsaturated fats that accumulate in the brain and retina damage mitochondria

Then it must be true that...

Retinopathy of prematurity has blinded tens of thousands of people