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Racial variation of optic disc size
1Department of Ophthalmology, University of Texas Medical Branch, Galveston.
Ophthalmic Research
|January 1, 1991
Summary
Optic disc size varies significantly by race and sex. Whites and Hispanics, along with females, generally have smaller optic discs compared to other groups, influencing optic disc morphometry studies.
Area of Science:
- Ophthalmology
- Optometry
- Human Anatomy
Background:
- Optic disc morphometry is crucial for diagnosing various ocular conditions.
- Understanding variations in optic disc size across different populations is essential for accurate clinical assessment.
Purpose of the Study:
- To investigate the influence of race and sex on optic disc size measurements.
- To establish normative data for optic disc diameter and area in a diverse cohort.
Main Methods:
- Quantitative analysis of optic disc morphometry in 125 healthy volunteers.
- Measurement of horizontal disc diameter and disc area using standardized techniques.
Main Results:
- Significant differences in optic disc size were observed between racial groups (Whites/Hispanics vs. non-American Indians/Orientals/Blacks).
- Females exhibited smaller optic disc dimensions than males.
- No significant correlation was found between optic disc size and participant age.
Conclusions:
- Race and sex are significant determinants of optic disc size.
- Future research on optic disc morphometry must consider demographic factors like race and sex for accurate interpretation.