Scheimpflug image-based changes in anterior segment parameters during accommodation induced by short-term reading

Agnes Lipecz, Alexis Tsorbatzoglou, Ziad Hassan, A. Berta, L. Módis, Gabor Nemeth

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Purpose: To analyze the effect of the accommodation on the anterior segment data (corneal and anterior chamber parameters) induced by short-time reading in a healthy, nonpresbyopic adult patient group. Methods: Images of both eyes of nonpresbyopic volunteers were captured with a Scheimpflug device (Pentacam HR) in a nonaccommodative state. Fifteen minutes of reading followed and through fixation of the built-in target of Pentacam HR further accommodation was achieved and new images were captured by the device. Anterior segment parameters were observed and the differences were analyzed. Results: Fifty-two healthy eyes of 26 subjects (range 20.04-28.58 years) were analyzed. No significant differences were observed in the keratometric values before and after the accommodative task (p = 0.35). A statistically significant difference was measured in the 5.0-mm-diameter and the 7.0-mm-diameter corneal volume (p = 0.01 and p = 0.03) between accommodation states. Corneal aberrometric data did not change significantly during short-term accommodation. Significant differences were observed between nonaccommodative and accommodative states of the eyes for all measured anterior chamber parameters. Conclusions: Among the parameters of the cornea, only corneal volume changed during the short-term accommodation process, showing some fine changes with accommodation of the cornea in young, emmetropic patients. The position of the pupil and the anterior chamber parameters were observed to change with accommodation as captured by a Scheimpflug device.

Original languageEnglish
Pages (from-to)301-307
Number of pages7
JournalEuropean Journal of Ophthalmology
Volume27
Issue number3
DOIs
Publication statusPublished - May 1 2017

    Fingerprint

Keywords

  • Accommodation
  • Anterior chamber depth
  • Corneal volume
  • Higher-order aberrations
  • Pentacam HR

ASJC Scopus subject areas

  • Ophthalmology

Cite this