Eases focusing strain
Accommodation
In depth
The ciliary muscle holds its contraction for as long as you hold your attention on something near. Distance is the resting state; everything closer is work you never decided to begin.
What it drives
It increases Eases screen fatigue.
In 69 hyperopic patients performing a 20-minute near task with lenses set to leave different fractions of accommodative amplitude in reserve, asthenopia scores fell significantly once at least 35% of accommodation was held in reserve, so the greater the accommodative effort demanded, the more eye strain was reported. doi 10.5935/0034-7280.20150046
Blends that modulate it
Each blend page names this pathway and carries the study behind its claim.
See it on the map
Open the causal map to follow this pathway upstream and downstream, arrow by arrow, each with its study.