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Comparative assessment of pupillary oscillation and blinking rate between emmetropes and myopes

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Original Article

Author Details : Soumya Kanta Mohanty , Pallavi Priyadarshini Sahu, Sourav Padhee, Shovna Dash*

Volume : 10, Issue : 1, Year : 2024

Article Page : 132-136

https://doi.org/10.18231/j.ijceo.2024.023

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Abstract

Aim: Aim of this study was to investigate for a relationship between pupillary oscillations (PO) and blinking rate (B) in various vision deprived states such as in refractive errors (Myopes).
Materials and Methods: A case control descriptive study with 340 individuals, including 220 myopes and 120 emmetropes were compared for pupillary oscillation rate (PO), blinking rate (B) and Pupillary oscillation/blinking rate (PO/B) ratio bilaterally in normal as well as in individual subgroups of decreasing visual acuity, done under slit lamp in dim diffuse illumination.
Results: The pupillary oscillation rate (PO) was 49.23± 8.80 in right eye (POR) and 56.44 ±8.95 in left eye (POL) in the control group whereas it was 46.28 ±11.55 and 52.79 ±11.22 in the right and left eyes respectively of the cases. While PO/B ratio was 12.41±14.11 in the right eye and 14.33±15.9 in the left eye in control group, it was 7.13 ± 7.86 in the right and 8.18 ±9.07 in the left eye of the cases respectively. The blinking rate (B) was 8.62 ±6.06 in the control eyes and in the cases it was 11.69 ±7.91. The comparative analysis of all of the above parameters were statistically significant with p < 0 xss=removed> POL in 7.50% and POR < POL> Conclusion: This study could be useful in non-verbal patients and comatose patients as diagnostic and prognostic tool, having an implication in different refractive errors and neurological diseases.
 

Keywords: Blinking rate (B), Pupillary oscillations (PO), Refractive errors.

How to cite : Mohanty S K, Sahu P P, Padhee S, Dash S, Comparative assessment of pupillary oscillation and blinking rate between emmetropes and myopes. Indian J Clin Exp Ophthalmol 2024;10(1):132-136

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