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Ocular biometric measurements in cataract surgery candidates in Portugal

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Session Details

Session Title: Presented Poster Session: Quality of Vision/Miscellaneous

Venue: Poster Village: Pod 3

First Author: : T.Ferreira PORTUGAL

Co Author(s): :    K. Hoffer   F. Ribeiro   P. Ribeiro   J. O'Neill     

Abstract Details


Describe the ocular biometric parameters and their associations in a population of cataract surgery candidates


Hospital da Luz, Lisbon, Portugal


A retrospective study of 3,253 eyes of 6,506 patients was performed. The axial length (AL), mean keratometry (K) and astigmatism, anterior chamber depth (ACD) (epithelium to lens), lens thickness (LT), and Corneal Diameter (CD) were measured by optical low-coherence reflectometry


The mean age was 69±10 years. Mean AL, Km, and ACD were 23.87±1.55 mm, 43.91±1.71 D, and 3.25±0.44 mm, respectively. The mean LT was 4.32±0.49 mm and the mean CD was 12.02±0.46 mm. The mean corneal astigmatism was 1.08±0.84 D and 43.5% of eyes had astigmatism ≥ 1.00 D. Male patients had longer AL and ACDs (p < .001) and flatter corneas (p < .001). In regression models considering age, gender, Km, ACD, LT, and CD, a longer AL was associated with being male and having higher ACD, LT and CD


These data represent normative biometric values for the Portuguese population. The greatest predictor of ocular biometrics was gender. There was no significant correlation between age and AL, ACD, or Km. These results may be relevant in the evaluation of refractive error and in the calculation of intraocular lens power.

Financial Disclosure:

has significant investment interest in a company producing, developing or supplying product or procedure presented, travel has been funded, fully or partially, by a competing company, receives consulting fees, retainer, or contract payments from a competing company

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