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Methodological variations in studies reporting normative data for binocular vision parameters: a scoping review

Pooja Nandagopal1, Krithica Srinivasan, Jayasheela R Bhat

  • 1Department of Optometry, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India.

JBI Evidence Synthesis
|December 15, 2022
PubMed
Summary
This summary is machine-generated.

This scoping review maps variations in methods and populations for studies on accommodation and vergence normative data. Understanding these differences is key for accurate diagnosis of binocular vision anomalies.

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Area of Science:

  • Ophthalmology and Vision Science
  • Optometry
  • Public Health

Background:

  • Accommodation and vergence are crucial for normal binocular vision.
  • Anomalies in these parameters can significantly impact an individual's quality of life and daily visual tasks.
  • Current diagnostic procedures for these anomalies involve various tests, with potential variations in outcomes due to differing methodologies and tools.

Purpose of the Study:

  • To conduct a scoping review mapping the methodological variations and population characteristics of studies reporting normative data for accommodation and vergence parameters.
  • To explore the diversity in study designs and measurement methods used to establish normative data for binocular vision parameters.
  • To identify potential influences of different methodologies and population characteristics on the reported normative data for accommodation and vergence.

Main Methods:

  • The review will follow the JBI methodological framework for scoping reviews and the PRISMA-ScR checklist.
  • Comprehensive literature searches will be conducted across multiple databases including PubMed, Scopus, CINAHL, Web of Science, African Journals Online, LILACS, CNKI, and Google Scholar.
  • Screening will involve two stages: title/abstract screening followed by full-text screening, with data extraction and descriptive summarization of findings.

Main Results:

  • The review will present a descriptive summary of the methodological variations identified in the included studies.
  • Population characteristics, such as age, ethnicity, and health status, will be mapped across the studies.
  • Key differences in measurement tools and protocols for assessing accommodation and vergence will be highlighted.

Conclusions:

  • This scoping review will provide a comprehensive overview of the landscape of research on normative data for accommodation and vergence.
  • The findings will elucidate the extent of methodological heterogeneity and its potential impact on normative data interpretation.
  • Understanding these variations is essential for standardizing assessment protocols and improving the diagnosis and management of binocular vision disorders.