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Do only children have poor vision? Evidence from China's One-Child Policy

Liqiu Zhao1, Minghai Zhou2

  • 1School of Labor and Human Resources, Renmin University of China, Beijing, China.

Health Economics
|April 24, 2018
PubMed

Insights

Being an only child, due to increased parental expectations and pressure, significantly raises the risk of myopia. This study explores the health impacts of China's One-Child Policy on vision.

Area of Science:

  • Public Health
  • Ophthalmology
  • Sociology

Background:

  • The Chinese One-Child Policy created a unique quasi-natural experiment.
  • Understanding the health consequences of this policy is crucial.

Purpose of the Study:

  • To investigate the link between being an only child and myopia incidence.
  • To explore the mechanisms behind this association.

Main Methods:

  • Utilizing the quasi-natural experiment from the Chinese One-Child Policy.
  • Analyzing the impact of being an only child on myopia.

Main Results:

  • Only children showed a 9.1 percentage point increase in myopia incidence.
  • Higher parental expectations and academic pressure contribute to myopia in only children.
  • Only children had access to significantly higher school quality.

Conclusions:

  • The One-Child Policy is associated with increased myopia among only children.
  • Parental expectations and educational pressures are key contributing factors.
  • School quality may also play a role in the observed vision differences.

Keywords:
ChinaOne-Child Policyeducational pressuremyopia

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