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Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
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Related Experiment Video

Updated: May 31, 2026

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
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Published on: September 16, 2025

[Detection of keratoconus using wavefront analysis].

N Mesplié1, S Léoni-Mesplié, A Gallois

  • 1Service d'ophtalmologie, centre hospitalier universitaire Pellegrin, place Amélie-Raba-Léon, 33076 Bordeaux cedex, France. sannico@aliceadsl.fr

Journal Francais D'Ophtalmologie
|July 2, 2011
PubMed
Summary
This summary is machine-generated.

Wavefront analysis effectively detects early keratoconus stages, including suspect and forme fruste. Corneal aberrations, particularly coma, are key indicators, but should complement other diagnostic tools.

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Area of Science:

  • Ophthalmology
  • Corneal Imaging
  • Wavefront Aberrometry

Background:

  • Keratoconus is a progressive corneal ectasia.
  • Early detection is crucial for managing refractive surgery candidates.
  • Wavefront analysis offers a detailed assessment of corneal topography.

Purpose of the Study:

  • To evaluate the efficacy of wavefront analysis in identifying keratoconus.
  • To differentiate between healthy, suspect, forme fruste, and early keratoconus.
  • To assess the diagnostic value of specific corneal aberrations.

Main Methods:

  • Prospective study (2008-2010) with 4 groups: healthy, suspect, forme fruste, and beginning keratoconus.
  • Analysis of total and corneal aberrations using wavefront technology.
  • Statistical comparison (Fisher, Student t-tests) and ROC curve analysis for diagnostic performance.

Main Results:

  • Corneal coma (Z3), trefoil (Z3), and secondary astigmatism (Z4) distinguished healthy from suspect corneas.
  • Corneal coma showed the highest discrimination (Youden=0.334, sensitivity=60.5%) between healthy and suspect groups.
  • High-order aberrations were valuable for grading keratoconus severity and differentiating suspect from forme fruste stages.

Conclusions:

  • Wavefront analysis aids in detecting keratoconus suspect, forme fruste, and early stages.
  • Corneal aberrations are more discriminative than total aberrations.
  • Combined with videotopography and pachymetry, wavefront analysis enhances refractive surgery consultations.