At what age the average human starts have weaker eyesight?
Answers:
If you are discussing presbyopia, the eye "problem" that older people develop as a result of the hardening of the lens, and its inability to round up, or "accommodate", that would be between age 40-42. It continues to tweaking, until about age 50 at which time, the changes more or less plane out. Source(s): Been there, done that, have the t-shirt to show for it, wash my vehicle with it.
Many Asians require glasses in their teens due to the growing of the eyeballs and the shape of the eyeballs within that race. As stated above, Causasians often start to get problems when the lens harden later in life.
Both of these conditions can be overcome next to spectacles or looking through a pinhole - just refocusing the light.
Older smokers get a condition call macular degeneration - there is nothing that can be done about this.
And the elder you are, the more likely you are to form a cataract (cloudy area) in the lens - this can be treated with surgery.
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