jefmcg
Guru
I'm solidly over 40, and need reading glasses to read my phone. When turning on strava at the beginning of the ride, I can't read the screen. However, a couple of hours later, I can see my segment results without needing the glasses.
I had put this down to effects of being away from screens, long distance focusing, bright broad-spectrum light, etc etc ** but now I wonder if bicarbs might have an effect too.
http://www.scientificamerican.com/podcast/episode/see-movement-better-by-bicarb/
Either way, the effect is temporary, but interesting non the less.
** there does seem to be a definite benefit of bright light and long vistas, at least on children's eyes. Kids growing up in Singapore, where even play tends to take place in indoor halls, have a very high percentage of glasses wearing; much higher than their parents. Their cousins in Australia, a genetically similar group but who spend much more time outdoors in bright light, do not show a similar problem.
I had put this down to effects of being away from screens, long distance focusing, bright broad-spectrum light, etc etc ** but now I wonder if bicarbs might have an effect too.
http://www.scientificamerican.com/podcast/episode/see-movement-better-by-bicarb/
Makino says heavy exercise—which causes a boost in CO2—might even alter the body's bicarbonate enough to trigger a measurable effect on the eye. "I don't think it's known whether your vision changes under conditions of vigorous exercise. So that'll be an interesting question for the experimental psychologists and the psychophysicists."
Either way, the effect is temporary, but interesting non the less.
** there does seem to be a definite benefit of bright light and long vistas, at least on children's eyes. Kids growing up in Singapore, where even play tends to take place in indoor halls, have a very high percentage of glasses wearing; much higher than their parents. Their cousins in Australia, a genetically similar group but who spend much more time outdoors in bright light, do not show a similar problem.