TY - JOUR
T1 - Long-term intraocular pressure changes after pars plana vitrectomy
T2 - An 8-year study
AU - Omidtabrizi, Arash
AU - Ghavami, Vahid
AU - Shafiee, Masoud
AU - Bayani, Razieh
AU - Banaee, Touka
N1 - Publisher Copyright:
© 2020 Iranian Society of Ophthalmology. All rights reserved.
PY - 2020/10/1
Y1 - 2020/10/1
N2 - Purpose: To investigate the long-term changes of intraocular pressure (IOP) after pars plana vitrectomy (PPV). Methods: This was a retrospective historical cohort study. Patients with a history of vitrectomy in one eye by a single surgeon were enrolled. IOP of the operated eye was compared to the fellow eye. Previous scleral buckling, IOP rise due to surgical/anatomic complications, silicone oil (SO) emulsification, and contralateral ocular hypertension/glaucoma at recruitment were exclusion criteria. 'Significant IOP rise' (>6.0 mmHg) and development of open angle glaucoma (OAG) were the main outcome measures. Results: Two hundred and twenty-five eyes were included. Mean and median follow-up duration were 20.6 and 9.0 months, respectively. Mean baseline IOP and mean final IOP were 13.53 ± 3.75 mmHg and 16.52 ± 6.95 mmHg, respectively (P < 0.001). Forty-three patients developed 'significant IOP rise' with no statistically significant relation to the indication of vitrectomy, the postoperative lens status, and number of vitrectomies (P = 0.410, P = 0.900, and P = 0.160, respectively). SO injection raised the probability of IOP rise in the long-term (P = 0.028). OAG occurred in 17 patients (7.5%) with no association to SO tamponade (P = 0.840). 'Significant IOP rise' and OAG occurred in 3 and 1 control eyes, respectively, significantly lower than the rates in study eyes (P < 0.001). Conclusion: Mean IOP slightly rose in the long-term after PPV. SO tamponade was associated with IOP rise in the long-term but not with the incidence of OAG. Both IOP rise and OAG were more probable after vitrectomy.
AB - Purpose: To investigate the long-term changes of intraocular pressure (IOP) after pars plana vitrectomy (PPV). Methods: This was a retrospective historical cohort study. Patients with a history of vitrectomy in one eye by a single surgeon were enrolled. IOP of the operated eye was compared to the fellow eye. Previous scleral buckling, IOP rise due to surgical/anatomic complications, silicone oil (SO) emulsification, and contralateral ocular hypertension/glaucoma at recruitment were exclusion criteria. 'Significant IOP rise' (>6.0 mmHg) and development of open angle glaucoma (OAG) were the main outcome measures. Results: Two hundred and twenty-five eyes were included. Mean and median follow-up duration were 20.6 and 9.0 months, respectively. Mean baseline IOP and mean final IOP were 13.53 ± 3.75 mmHg and 16.52 ± 6.95 mmHg, respectively (P < 0.001). Forty-three patients developed 'significant IOP rise' with no statistically significant relation to the indication of vitrectomy, the postoperative lens status, and number of vitrectomies (P = 0.410, P = 0.900, and P = 0.160, respectively). SO injection raised the probability of IOP rise in the long-term (P = 0.028). OAG occurred in 17 patients (7.5%) with no association to SO tamponade (P = 0.840). 'Significant IOP rise' and OAG occurred in 3 and 1 control eyes, respectively, significantly lower than the rates in study eyes (P < 0.001). Conclusion: Mean IOP slightly rose in the long-term after PPV. SO tamponade was associated with IOP rise in the long-term but not with the incidence of OAG. Both IOP rise and OAG were more probable after vitrectomy.
KW - Intraocular pressure
KW - Open angle glaucoma
KW - Pars plana vitrectomy
KW - Silicone oil
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U2 - 10.4103/JOCO.JOCO_85_20
DO - 10.4103/JOCO.JOCO_85_20
M3 - Article
AN - SCOPUS:85098110889
SN - 1735-4153
VL - 32
SP - 335
EP - 342
JO - Journal of Current Ophthalmology
JF - Journal of Current Ophthalmology
IS - 4
ER -