Genetics of epidermal ridges: a study in subjects with refractive errors.

Area of Science:

• Ophthalmology
• Genetics
• Forensic Science

Background:

• Dermatoglyphics, the study of fingerprint patterns, has been explored for potential links to various physiological and pathological conditions.
• Refractive errors, including myopia, hypermetropia, and astigmatism, are common vision impairments with complex etiologies.
• Understanding the interplay between genetic markers and refractive errors can offer insights into their development.

Purpose of the Study:

• To investigate dermatoglyphic differences in individuals with various refractive errors compared to a control group.
• To analyze both qualitative and quantitative dermatoglyphic parameters in relation to myopia, hypermetropia, and astigmatism.
• To explore potential sex-based variations in these dermatoglyphic characteristics.

Main Methods:

• Comparison of dermatoglyphic features (loops, whorls, arches, total ridge count, pattern intensity) between subjects with refractive errors and a control group.
• Analysis of qualitative and quantitative parameters across different types of refractive errors (myopia, hypermetropia, astigmatism).
• Stratification of data by sex to identify gender-specific dermatoglyphic variations.

Main Results:

• Significant differences in qualitative and quantitative dermatoglyphic parameters were observed between refractive error groups and controls.
• In males, loops increased in myopics, whorls increased in hypermetropics and astigmatics, and arches decreased across all refractive error types.
• Female hypermetropics showed decreased whorls; male astigmatics exhibited a significantly higher mean total ridge count. Finger pattern intensity showed no significant differences.

Conclusions:

• Dermatoglyphic patterns exhibit significant variations associated with different types of refractive errors, particularly in males.
• Specific fingerprint patterns (loops, whorls, arches) are differentially represented in individuals with myopia, hypermetropia, and astigmatism.
• These findings suggest a potential link between dermatoglyphic markers and the predisposition to or manifestation of refractive errors, warranting further investigation.