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Related Experiment Video

Updated: May 12, 2026

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Published on: March 29, 2022

Nearwork-induced transient myopia and parental refractive error.

Zhong Lin¹, Balamurali Vasudevan, Kenneth J Ciuffreda

¹Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing, China.

Optometry and Vision Science : Official Publication of the American Academy of Optometry

|March 30, 2013

Summary

Parental refractive error did not influence children's nearwork-induced transient myopia (NITM) characteristics. This suggests environmental factors, not genetics, primarily shape NITM in children.

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Area of Science:

Ophthalmology
Pediatric Optometry
Myopia Research

Background:

Nearwork-induced transient myopia (NITM) is a temporary myopic shift after near tasks.
Understanding factors influencing NITM is crucial for myopia progression research.
Parental myopia is a known risk factor for developing myopia in children.

Purpose of the Study:

To examine the association between parental refractive error and children's NITM characteristics.
To determine if genetic predisposition influences NITM magnitude and decay.
To explore the role of parental myopia in children's transient myopic shifts.

Main Methods:

360 children (6-17 years) underwent objective NITM and decay time (DT) assessment.
NITM was measured after a 5-minute sustained near task (5D) with refractive correction.
Children were grouped by number and level of parental myopia.

Main Results:

No significant relationship was found between parental refractive error and children's initial NITM magnitude or DT.
The number of myopic parents or the level of parental myopia did not affect NITM magnitude, DT, or decay.
Odds ratios for incomplete NITM decay remained unchanged regardless of parental myopia status.

Conclusions:

Parental refractive error is not associated with children's NITM characteristics.
Findings suggest that environmental factors play a primary role in determining children's NITM.
This study differentiates genetic influence from environmental impact on transient myopia.