Eye Sighting Aging Curve

In a recent New Yorker article,  Malcom Gladwell reported on eye sight in baseball:

The ophthalmologist Louis Rosenbaum tested close to four hundred major- and minor-league baseball players over four years and found an average visual acuity of about 20/13; that is, the typical professional baseball player can see at twenty feet what the rest of us can see at thirteen feet. When Rosenbaum looked at the Los Angeles Dodgers, he found that half had 20/10 vision and a small number fell below 20/9, “flirting with the theoretical limit of the human eye,” as Epstein points out. The ability to consistently hit a baseball thrown at speeds approaching a hundred miles an hour, with a baffling array of spins and curves, requires the kind of eyesight commonly found in only a tiny fraction of the general population.

 

Eyesight can be improved—in some cases dramatically—through laser surgery or implantable lenses. Should a promising young baseball player cursed with normal vision be allowed to get that kind of corrective surgery?

With that information, I wondered if eyes age differently than the rest of the body, specifically related to a player seeing the ball and making contact.

At FanGraphs, Bill Petti has shown contact peaking at age around age 29.

I wondered if eye sight aged could be a reason for contact degrading. After searching around the internet for applicable sources, I found a usable aging curve.

The curve shows five year intervals, so it isn’t close to being similar to the Contact% aging curve. With the similarity teams should monitor hitter eye sight closely.

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