Preoperative iris configuration and intraocular pressure after cataract surgery.
J Cataract Refract Surg
; 38(1): 117-23, 2012 Jan.
Article
em En
| MEDLINE
| ID: mdl-22082750
ABSTRACT
PURPOSE:
To determine predictors of long-term intraocular pressure (IOP) after cataract surgery.SETTING:
Hunter Holmes McGuire Veterans Administration Hospital, Richmond, Virginia, USA.DESIGN:
Case series.METHODS:
Clinical variables, IOP by applanation tonometry, anatomic features on anterior segment optical coherence tomography (AS-OCT), and gonioscopy were assessed before and after uneventful cataract surgery in eyes with open filtration angles. Multivariate linear regression of preoperative measurements was used to predict the mean IOP from 2 to 18 months postoperatively.RESULTS:
The study enrolled 77 eyes (77 patients). Prediction of the mean postoperative IOP improved when up to 4 preoperative IOP values were averaged (r(2) = 0.20) compared with using the final preoperative IOP value only (r(2) = 0.13). The mean iris cross-sectional area decreased after surgery, from 3.84 mm(2) to 3.70 mm(2) (P=.01). The mean convex hull of the iris segments also decreased, from 5.05 mm(2) to 4.19 mm(2) (P<.001). The mean postoperative IOP was independently predicted by the preoperative average IOP, primary open-angle glaucoma, and the convex hull of cross-sectional iris segments (P=.001, model r(2) = 0.38) or iris cross-sectional area (P=.003, model r(2) = 0.36). Phacoemulsification parameters, incision type, and anterior chamber angle and depth did not predict postoperative IOP.CONCLUSIONS:
Averaging up to 4 preoperative IOP values improved postoperative IOP predictions. A high iris cross-sectional area or convex hull of the iris segments on AS-OCT was associated with lower postoperative IOP. These findings might help identify patients who are likely to have the largest IOP drop after cataract surgery.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Iris
/
Facoemulsificação
/
Implante de Lente Intraocular
/
Pressão Intraocular
Tipo de estudo:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Aged
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
J Cataract Refract Surg
Assunto da revista:
OFTALMOLOGIA
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Estados Unidos