Does Oxygen Intake Affect the Whiteness of the Sclera?

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Does "the more oxygen your eyes have, the whiter your sclera becomes" (as claimed by certain contact lens manufactures)?

If so, why?
If not, then what actually affect the whiteness of the sclera?

Thanks!
 
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I don't think so, doesn't it have to do with genetics?

In children, the sclera is thinner and can show some of the inner blueness of the vitreous humor.
 
sclera is already white, oxygen may condense the fibrous tissue, opacity changes,