Korean J Otolaryngol-Head Neck Surg.  1999 Oct;42(10):1230-1233.

Adaptation of the Vestibulo-Ocular Reflex to Concave Spectacle Lens

• Park HM
• Kim HG
• Rhee CK
• Chung PS

Abstract

BACKGROUND AND OBJECTIVES: Vestibulo-ocular reflex (VOR) is the mechanism for the production of rapid compensatory eye movement during head movements. VOR gain can adapt to a change in visual stimulation, which is called adaptive plasticity. To investigate the adaptation of VOR to concave spectacle lens, the authors compared the diopters with VOR gain changes.
MATERIALS AND METHODS
Calibration and sinusoidal harmonic acceleration (SHA) rotation tests at 0.01, 0.04 and 0.16 Hz were performed on 24 volunteer subjects wearing myopic lenses, with glasses on and off.
RESULTS
VOR gains of patients with glasses-on were significantly greater, compared with those without glasses. Correlation between diopters and gain change ratio was significant, especially at low frequencies.
CONCLUSION
Long-term wearing of myopic lenses induced VOR gain reduction, which is proportioned to the diopter of the lenses.

Keyword

Adaptation; Vestibulo-ocular reflex; Gain; Myopic lens

MeSH Terms

Acceleration
Calibration
Eye Movements
Eyeglasses
Glass
Head Movements
Humans
Photic Stimulation
Plastics
Reflex, Vestibulo-Ocular*
Volunteers
Plastics