J Korean Ophthalmol Soc.  2013 Jan;54(1):85-91. 10.3341/jkos.2013.54.1.85.

Transient Hypotony after Silicone Oil Removal in Rhegmatogenous Retinal Detachment

• Ha SW
• Kwon SJ
• Park DH
• Shin JP

• KMID: 2216454
• DOI: http://doi.org/10.3341/jkos.2013.54.1.85

Abstract

PURPOSE
To determine the risk factors for transient hypotony after silicone oil removal in rhegmatogenous retinal detachment and to analyze changes in intraocular pressure and visual acuity after silicone oil removal.
METHODS
The medical records of 54 eyes of 52 patients who underwent pars plana vitrectomy, silicone oil tamponade followed by silicone oil removal due to rhegmatogenous retinal detachment, were reviewed.
RESULTS
The incidence of transient hypotony after silicone oil removal was 18.5%. Young age (p = 0.011) and axial length (p = 0.002) were risk factors for transient hypotony based on univariate analysis. In multivariate analysis, axial length longer than 26 mm was the only risk factor for transient hypotony (p = 0.005). Seven hypotony patients recovered to normal intraocular pressure spontaneously within 2 weeks. In 2 patients, intraocular pressure was normalized after intravitreal injection of C3F8 gas and 1 patient recovered after a balanced salt solution injection into the anterior chamber. Two weeks after silicone oil removal, there was no significant difference in intraocular pressure between the hypotony group and normal intraocular pressure group. Additionally, there was no statistically significant difference in best corrected visual acuity between the 2 groups after 2 weeks.
CONCLUSIONS
Although transient hypotony after silicone oil removal in rhegmatogenous retinal detachment was frequently observed in the present study, the final best corrected visual acuity and intraocular pressure was not always affected. Ocular hypotony should be examined thoroughly in the early postoperative period.

Keyword

Rhegmatogenous retinal detachment; Silicone oil removal; Transient hypotony

MeSH Terms

Anterior Chamber
Humans
Incidence
Intraocular Pressure
Intravitreal Injections
Medical Records
Multivariate Analysis
Ocular Hypotension
Postoperative Period
Retinal Detachment*
Risk Factors
Silicone Oils*
Visual Acuity
Vitrectomy
Silicone Oils

Figure

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  Figure 1. Changes in intraocular pressure after silicone oil removal in rhegmatogenous retinal detachment.

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  Figure 2. Changes in best corrected visual acuity (BCVA) after silicone oil removal in rhegmatogenous retinal detachment.

Reference

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