[Clinical analysis of intraocular pressure elevation following vitreoretinal surgery].
OBJECTIVE
To study the incidence and risk factors of intraocular pressure (IOP) elevation in patients who underwent vitreoretinal surgery.


METHODS
Data for 422 patients (446 eyes) who underwent vitreoretinal surgery from June 2005 to June 2007 were retrospectively analyzed. IOP was measured before surgery and on day 1, 2, 3, 7-14 after surgery with Goldmann applanation tonometer. Ocular hypertension was defined as IOP 25 mmHg or more. All factors were analyzed for association with Ocular hypertension.


RESULTS
232 of the 422 patients were female. 190 were male. The IOP was elevated significantly in 185 eyes (41%) after surgery within 2 weeks. Among them the IOP occurred mostly in day 1 (152 eyes, 82%). The rate of IOP elevation with intraocular tamponade of C3F8 or silicone oil was 53% or 55%, the difference being not statistically significant (P>0.05). The incidence of high IOP in C3F8 injection group and silicone oil injection group were statistically higher than simple pars plana vitrectomy group (P<0.01). The risk factors of ocular hypertension include C3F8 injection (chi2=37.82, P<0.01), silicone oil injection (chi2=27.84, P<0.01), lentectomy (chi2=8.98, P<0.01), scatter endolaser (chi2=7.41, P<0.01), diabetes (chi2=12.12, P<0.01) and increasing patient age (chi2=7.07, P<0.01).


CONCLUSIONS
IOP elevation was a common complication of vitreoretinal surgery. The risk factors of ocular hypertension include C3F8 injection, silicone oil injection, lentectomy, scatter endolaser, diabetes and increasing patient age.
Chao
Wei-jing
WJ
Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China.
Liu
Su-bing
SB
Dai
Rong-ping
RP
Yu
Wei-hong
WH
Zhang
Zhi-qiao
ZQ
Zhang
Xiao
X
Dong
Fang-tian
FT
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D015994:Incidence; D007429:Intraocular Pressure; D008297:Male; D008875:Middle Aged; D009798:Ocular Hypertension / Q000209:etiology*; D011183:Postoperative Complications / Q000209:etiology*; D012160:Retina / Q000601:surgery; D012307:Risk Factors; D014821:Vitrectomy / Q000009:adverse effects*; D014822:Vitreous Body / Q000601:surgery; D055815:Young Adult