It is rarely caused by any serious eye defect.
Studies have shown eye defects can occur at relatively high doses.
A second point to consider is that a number of eye defects may change for the better as a person ages.
Those worshipping this deity believe it will cure one of all eye defects.
Even minor eye defects can cause problems if they are not handled correctly.
"I can compensate almost any eye defect," he said.
However I am wary that this ongoing technology is inconsiderate to the needs of persons with significant eye defects.
People with poor accommodation, due to eye defects or age, have to wear artificial lenses to compensate.
Genetic eye defects, though quite rare, have been noted in the breed.
Hitchens originally hoped to become a naval officer, but an eye defect prevented him from doing so.