Lens position parameters as predictors of intraocular pressure reduction after cataract surgery in nonglaucomatous patients with open angles

Chi Hsin Hsu, Caitlin L. Kakigi, Shuai Chun Lin, Yuan Hung Wang, Travis Porco, Shan C. Lin

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

PURPOSE. To evaluate the relationship between lens position parameters and intraocular pressure (IOP) reduction after cataract surgery in nonglaucomatous eyes with open angles. METHODS. The main outcome of the prospective study was percentage of IOP change, which was calculated using the preoperative IOP and the IOP 4 months after cataract surgery in nonglaucomatous eyes with open angles. Lens position (LP), defined as anterior chamber depth (ACD) ± 1/2 lens thickness (LT), was assessed preoperatively using parameters from optical biometry. Preoperative IOP, central corneal thickness, ACD, LT, axial length (AXL), and the ratio of preoperative IOP to ACD (PD ratio) were also evaluated as potential predictors of percentage of IOP change. The predictive values of the parameters we found to be associated with the primary outcome were compared. RESULTS. Four months after cataract surgery, the average IOP reduction was 2.03 ± 2.42 mm Hg, a 12.74% reduction from the preoperative mean of 14.5 6 3.05 mm Hg. Lens position was correlated with IOP reduction percentage after adjusting for confounders (P = 0.002). Higher preoperative IOP, shallower ACD, shorter AXL, and thicker LT were significantly associated with percentage of IOP decrease. Although not statistically significant, LP was a better predictor of percentage of IOP change compared to PD ratio, preoperative IOP, and ACD. CONCLUSIONS. The percentage of IOP reduction after cataract surgery in nonglaucomatous eyes with open angles is greater in more anteriorly positioned lenses. Lens position, which is convenient to compute by basic ocular biometric data, is an accessible predictor with considerable predictive value for postoperative IOP change

Original languageEnglish
Pages (from-to)7807-7813
Number of pages7
JournalInvestigative Ophthalmology and Visual Science
Volume56
Issue number13
DOIs
Publication statusPublished - Dec 1 2015

Keywords

  • Cataract surgery
  • Intraocular pressure reduction
  • Lens position parameters
  • Open angles
  • Predictors

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience

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