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Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
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Ocular Biometric Changes after Trabeculectomy.

Azam Alvani1, Mohammad Pakravan2, Hamed Esfandiari1

  • 1Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Journal of Ophthalmic & Vision Research
|September 14, 2016
PubMed
Summary
This summary is machine-generated.

Trabeculectomy significantly reduces axial length and induces corneal astigmatism, impacting refractive predictions. Anterior chamber depth changes are minimal and temporary after the surgery.

Keywords:
Anterior Chamber DepthAxial LengthKeratometryTrabeculectomy

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Area of Science:

  • Ophthalmology
  • Ocular Surgery
  • Biometry

Background:

  • Trabeculectomy is a common surgical procedure for glaucoma.
  • Understanding ocular biometric changes post-trabeculectomy is crucial for managing patient outcomes.
  • Accurate refractive prediction is essential, especially for combined procedures.

Purpose of the Study:

  • To review and evaluate ocular biometric changes following trabeculectomy.
  • To assess alterations in axial length, anterior chamber depth, and corneal astigmatism.
  • To determine the clinical significance of these biometric shifts.

Main Methods:

  • Systematic review of PubMed-indexed studies.
  • Keywords: axial length, anterior chamber depth, corneal astigmatism, corneal topography, trabeculectomy.
  • Meta-analysis of comparable studies based on sample size.

Main Results:

  • Significant and persistent reduction in axial length (0.1-0.9 mm).
  • Induction of with-the-rule astigmatism (0.38-1.4 D).
  • Transient anterior chamber depth reduction, returning to baseline by day 14.

Conclusions:

  • Axial length and keratometry changes are significant and affect refractive predictions.
  • Anterior chamber depth changes are minor and short-lived, generally negligible.
  • Ocular biometric shifts necessitate consideration in refractive planning after trabeculectomy.