Evaluation of visual performance depending on tolerability of optical correction

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Abstract

Accommodative asthenopia is common in myopic patients when permanent full correction is prescribed, since their accommodative system does not tolerate increased stress due to close work.

AIM: To evaluate visual performance in myopic school children depending on tolerability of optical correction.

MATERIAL AND METHODS: A total of 154 children (11 to 16 years) with different levels of myopia, wearing corrective spectacles. Of them, 56 and 98 school children had good and poor tolerability of optical correction according to computed accommodation test, respectively. Accommodation was measured using autorefractor Righton Speedy-K ver. MF-1. Visual performance was evaluated using Bourdon test. Performance accuracy (At), accuracy factor (Ta), productivity (Pt), endurance factor (Kp), and speed of information processing (S) were determined.

RESULTS: In the group where spectacle correction caused asthenopia during visual tasking, performance accuracy, productivity, and accuracy factor exceeded the mean values in children without signs of accommodative asthenopia. But endurance factor and speed of information processing are significantly lower compared to the children with good tolerability of optical correction.

CONCLUSION: Tolerability of optical correction affects visual performance of school children. Poor tolerability of optical correction significantly decreases visual performance parameters, such as performance accuracy, productivity, and endurance.

About the authors

Olga V. Zhukova

Samara State Medical University

Author for correspondence.
Email: olga-g@list.ru
ORCID iD: 0000-0003-1246-370X
SPIN-code: 4123-1890

MD, Dr. Sci. (Medicine)

Russian Federation, Samara

Andrey V. Zolotarev

Samara State Medical University

Email: a.v.zolotarev@samsmu.ru
ORCID iD: 0000-0002-9107-5221
SPIN-code: 7164-8088

MD, Dr. Sci. (Medicine), Associate Professor

Russian Federation, Samara

Mahdi Abida

Samara State Medical University

Email: dr.abida.mahdi@yandex.ru
ORCID iD: 0000-0002-0758-5254
SPIN-code: 3876-3440

Оphthalmologist

Russian Federation, Samara

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Supplementary files

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2. Fig. 1. Accommodation test images of children with optical correction: a — Good tolerance of optical correction, b — Poor tolerance of optical correction

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3. Fig. 2. Proofreading test by E. Landolt

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4. Fig. 3. Performance accuracy in the examined school children before and after visual activities

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5. Fig. 4. Productivity in the examined school children

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6. Fig. 5. Endurance factor in the examined school children

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