Study Pontification Time! Myopic defocus in the evening is more effective at inhibiting eye growth than defocus in the morning: Effects on rhythms in axial length and choroid thickness in chicks.
“Animal models have shown that myopic defocus is a potent inhibitor of ocular growth: brief (1–2 h) daily periods of defocus are sufficient to counter the effects of much longer periods of hyperopic defocus, or emmetropic vision. While the variables of duration and frequency have been well-documented with regard to effect, we ask whether the efficacy of the exposures might also depend on the time of day that they are given. We also ask whether there are differential effects on the rhythms in axial length or choroidal thickness.”
All right, so this chickens and don’t count yours before they hatch, and all that.
Fascinating here at the very least is just how much research is out there, how much we already know and discover about eyesight and myopia … and how not even the top line of any of it exists anywhere in the retail optometry narrative.
(yes yes of course, we know why - patentable products, profit, quick fixes, etc etc)