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Blind Procedures

Blind Procedures

Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which child was...

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Related Experiment Video

Updated: May 7, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019

The chinese american eye study: design and methods.

Rohit Varma¹, Chunyi Hsu, Dandan Wang

¹Illinois Eye and Ear Infirmary, Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago , Chicago, IL , USA and.

Ophthalmic Epidemiology

|September 19, 2013

Summary

This summary is machine-generated.

The Chinese American Eye Study (CHES) assessed vision impairment and eye diseases in Chinese Americans aged 50+. It identified prevalence and risk factors for conditions like glaucoma and macular degeneration.

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Area of Science:

Ophthalmology
Public Health
Epidemiology

Background:

Chinese Americans are a rapidly growing demographic in the U.S.
Understanding the prevalence of eye diseases in this population is crucial for targeted healthcare interventions.
Limited data exists on the specific ocular health status of Chinese Americans.

Purpose of the Study:

To determine the prevalence of visual impairment and major ocular diseases in Chinese Americans.
To identify demographic, behavioral, and genetic risk factors associated with these conditions.
To assess visual functioning and quality of life in relation to eye health.

Main Methods:

Population-based, cross-sectional study of 4570 Chinese Americans aged 50+ in Monterey Park, California.
Comprehensive interviews covering demographics, risk factors, and quality of life.
Detailed eye examinations including visual acuity, intraocular pressure, imaging, and systemic health markers.

Main Results:

Prevalence estimates for visual impairment, refractive errors, diabetic retinopathy, glaucoma (open-angle and angle-closure), cataracts, and age-related macular degeneration.
Effect estimates for identified risk factors.
Investigation into genetic determinants of myopia and glaucoma.

Conclusions:

The Chinese American Eye Study provides critical data on the prevalence and risk factors of eye diseases in a significant minority population.
Findings will inform public health strategies and clinical practice for Chinese Americans.
Highlights the need for culturally sensitive eye care and screening programs.