Pupillary dynamics and accommodative response in mild traumatic brain injury.

Autor:	Dutta P; Sankara Nethralaya Academy, Tamil Nadu Dr. M.G.R Medical University, Chennai, Tamil Nadu, India., Atiya A; Department of Binocular Vision and Neuro-Optometry, Sankara Nethralaya, Chennai, Tamil Nadu, India., Vittal S; Department of Neuro-Ophthalmology, Unit of Medical Research Foundation, Chennai, Tamil Nadu, India., Ambika S; Department of Neuro-Ophthalmology, Unit of Medical Research Foundation, Chennai, Tamil Nadu, India., Hussaindeen JR; Department of Binocular Vision and Neuro-Optometry, Sankara Nethralaya, Chennai, Tamil Nadu, India.
Jazyk:	angličtina
Zdroj:	Taiwan journal of ophthalmology [Taiwan J Ophthalmol] 2023 May 23; Vol. 14 (2), pp. 248-255. Date of Electronic Publication: 2023 May 23 (Print Publication: 2024).
DOI:	10.4103/tjo.TJO-D-22-00169
Abstrakt:	Purpose: To measure the pupillary dynamics and accommodative response in individuals with mild traumatic brain injury (mTBI) as compared to age-matched controls. Materials and Methods: This prospective comparative study was carried out at the neuro-optometry clinic of a tertiary eye care hospital. Sixty-three subjects with a history of mTBI and ninety age-matched controls were enrolled in this study. Subjects in the age range of 18-35 years were included in the study. A comprehensive neuro-optometric assessment was performed followed by pupillary dynamics and accommodation response measurements using NeurOptics® pupillary light reflex™-3000 and Grand-Seiko WAM-5500 binocular accommodation auto ref/keratometer | shigiya machinery works LTD. Results: A statistically significant difference was noticed for constriction percentage (%): 32.73 ± 9.20 versus 39.93 ± 7.36 ( P < 0.001), average constriction velocity (mm/s): 2.24 ± 0.85 versus 2.62 ± 0.68 ( P = 0.002), maximum constriction velocity (mm/s): 3.82 ± 1.33 versus 4.42 ± 0.93 ( P = 0.004) and T75 (recovery period to 75% of the baseline pupillary diameter in sec): 1.38 ± 0.36 versus 2.0 ± 0.82 ( P < 0.001) in mTBI compared to age-matched controls. A statistically significant difference was noted for accommodative response (in D) as well as in the sample as compared to age-matched controls: -1.12 ± 0.64 versus - 1.39 ± 0.47 ( P < 0.001). Conclusion: Pupillary constriction velocities and accommodative response are significantly affected in mTBI. These findings have important clinical implications in being able to understand the visual symptoms following an mTBI. Competing Interests: The authors declare that there are no conflicts of interest in this paper. (Copyright: © 2023 Taiwan J Ophthalmol.)
Databáze:	MEDLINE
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