Myopia Is Surging, And One Common Habit Could Be Driving It
ScienceAlert • • health
Key Points:
- A study by SUNY College of Optometry suggests that increased indoor near work, rather than just screen time, may be a key factor driving the global rise in myopia (short-sightedness).
- The research found that myopes’ eyes tend to constrict pupils and turn inward more during close-up tasks, reducing retinal illumination and potentially weakening the ON pathway responsible for processing light.
- This pupil constriction indoors, especially in dim lighting, prioritizes focus over brightness, creating a feedback loop that may worsen myopia by limiting light reaching the retina.
- The study highlights that myopia development may be linked to poor retinal stimulation rather than just blurry vision, which could explain why overly strong corrective lenses might exacerbate the condition.
