The Influence of a Vitrectomy on the Diurnal Intraocular Pressure

Abstract

Purpose. To evaluate the diurnal intraocular pressure (IOP) in eyes after vitrectomy compared to that of healthy eyes. Methods. Twenty-one patients who had undergone vitrectomy and 21 age- and gender-matched normal controls were enrolled during the same period. We measured the diurnal IOP every two hours between 9 a.m. and 11 p.m. in all patients who were admitted for cataract surgery. Patients with a history of eye surgery (not including vitrectomy) or use of a medication that is associated with IOP were excluded. The IOP and ocular parameters of patients were compared with the same patients' fellow healthy eyes and with normal eyes of age- and gender-matched controls. Results. There were no significant differences between vitrectomized eyes and normal fellow eyes with regard to all IOP parameters including the maximum, minimum, and IOP fluctuation values. Diurnal fluctuation of IOP (or the difference between the maximum and minimum IOP) was larger in vitrectomized eyes than it was in age- and gender-matched control eyes. Conclusions. Vitrectomy did not markedly affect the IOP. Although there were no severe complications after vitrectomy, the IOP fluctuation was wider in vitrectomized eyes than it was in normal eyes.

Incidence and risk factors for intraocular pressure rise after transconjunctival vitrectomy

“…Literature is contradictory concerning associations between vitrectomy and raised IOP [ Table 1 ]. [ 6 ] However, it is often agreed that there is a good response to medical therapy for IOP rise following vitrectomy. In most of the studies, a mix of 20, 23, and 25 gauge vitreous surgeries were studied.…”

The Risk of Primary Open-Angle Glaucoma Following Vitreoretinal Surgery—A Population-based Study

“…17 Lee et al found a significant difference in IOP fluctuation in vitrectomized compared to matched control eyes, but no difference in the mean IOP. 21…”

Positional Intraocular Pressure of Vitrectomized and Normal Fellow Eyes

“…Many studies have reported that IOP varies after vitrectomy [ 5 6 7 ]. Some have indicated that IOP elevation following vitrectomy was observed only in the vitrectomized eye [ 8 9 ]; Lee et al [ 10 ] also suggested that the IOP fluctuation was greater in vitrectomized than in normal eyes. On the other hand, Chang et al [ 11 ] reported that silicone oil-filled eyes showed a peak IOP in the nocturnal period, as observed for the IOP of fellow eyes.…”