The Claim
The environmental visual load (EVL) model, which incorporates viewing distance, near work duration, and ambient lighting, is correlated with spherical equivalent refraction in adolescents.
What the research says
Not yet evaluated
We are still looking at what the research says.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In adolescents, a computational model based on how close they work, how long they work, and the lighting around them is linked to the degree of nearsightedness measured by eye exams.
See the scientific wording
The environmental visual load (EVL) model, derived from viewing distance, near work duration, and ambient lighting, was correlated with spherical equivalent refraction in adolescents, suggesting it may serve as a computational proxy for myopia severity in this population.
When the eyes focus on close objects for long periods in dim light, the lens thickens and the eyes turn inward more than needed. This imbalance sends a signal that causes the back of the eye to grow longer. At the same time, low light makes the pupil widen, blurring the image on the retina. The eye responds to this blur by growing longer to try to focus better. Both processes cause the eye to become too long, so light focuses in front of the retina instead of on it, resulting in nearsightedness.
What the research says
1 studyStudy: Multi-Interactive-Modality Based Modeling for Myopia Pro-Gression of Adolescent Student
When teens read for long hours, hold books too close, or work in dim light, their eyesight gets worse—and this model combines those three habits to predict how bad their nearsightedness is.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.