These two vision problems stem from the eye not being able to focus light exactly on the retina. The ability to do so is actually quite uncommon and most humans are fractionally long-sighted, fortunately the eye is capable of changing its shape slightly to refocus the light onto the retina for most people.

These two vision problems stem from the eye not being able to focus light exactly on the retina. The ability to do so is actually quite uncommon and most humans are fractionally long-sighted, fortunately the eye is capable of changing its shape slightly to refocus the light onto the retina for most people.

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