The Changes of the Visual Evoked Potentials and Visual Acuity after Silicone Oil Removal in the Vitrectomized Eyes.

Song, Cheal Hwa; Kim, Hyae Won; Cho, Ho Kyun

Original Article

Journal of the Korean Ophthalmological Society 1996;37(11):1878-1883.
Published online November 1, 1996.

The Changes of the Visual Evoked Potentials and Visual Acuity after Silicone Oil Removal in the Vitrectomized Eyes.

Cheal Hwa Song, Hyae Won Kim, Ho Kyun Cho

¹Department of Ophthalmology, School of Medicine, Chung-Ang University, Seoul, Korea.
²Department of Ophthalmology, National Police Hospital, Seoul, Korea.

유리체절제술을 시행한 눈에서 실리콘기름 제거전후의 시유발 전위 및 시력변화

송철화(Cheol Hwa Song),김혜원(Hae Won Kim),조호균(Ho Kyun Cho)

Abstract

To know the effect of the intravitreal silicone oil affecting the visual evoked potentials (VEPs), we reviewed 19 patient's charts retrospectively. All patients had received pars plana vitrectomies with intravitreal silicone oil injection. The oil was removed after a few months of intravitreal silicone oil. The eyes showing operative or postoperative complication were excluded in this study. The VEPs and visual acuity were tested one day before and two weeks after intravitreal silicone oil removal. The changes of VEPs and visual acuities between the pre- and post-silicone oil removal were analized. And the changes of VEPs according to the changes of the visual acuities in the pre- and post-silicone oil removal were analized with student t-Test and Spearman corelation. The VEPs amplitudes decreased significantly (p=0.03) after silicone oil removal, and the latencies increased slightly but statistically not significant. The findings suggested that intravitreal surgery itself may influence the VEPs. After removal of intravitreal silicone oil, no significant relationship was found between the changes of VEPs and those of visual acuities.

Key Words: Ntravitreal surgery;Visual acuity;Visual-evoked potential;Silicone oil