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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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Central corneal thickness in glaucoma.

Chelvin C A Sng1, Marcus Ang, Keith Barton

  • 1aGlaucoma Service, Moorfields Eye Hospital, London, UK bDepartment of Ophthalmology, National University Health System cSingapore Eye Research Institute dSingapore National Eye Centre, Singapore, Singapore eNational Institute for Health Research, Biomedical Research Centre for Ophthalmology, Moorfields Eye Hospital fDepartment of Epidemiology and Genetics, Institute of Ophthalmology, University College, London, UK.

Current Opinion in Ophthalmology
|October 21, 2016
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Summary
This summary is machine-generated.

Central corneal thickness (CCT) plays a role in glaucoma management, particularly for ocular hypertension. However, its predictive value in other glaucoma cases is less certain, with corneal biomechanics potentially being more significant.

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Area of Science:

  • Ophthalmology
  • Glaucoma Research
  • Corneal Physiology

Background:

  • Central corneal thickness (CCT) is a known factor in glaucoma diagnosis and management.
  • Its precise prognostic and predictive value across all glaucoma patient categories requires further clarification.

Purpose of the Study:

  • To review the role of central corneal thickness (CCT) in the clinical management of glaucoma patients.
  • To assess the current understanding and limitations of CCT in glaucoma assessment.

Main Methods:

  • Literature review summarizing existing research on CCT and glaucoma.
  • Analysis of the impact of CCT on tonometry measurements and diagnostic accuracy.
  • Exploration of potential biological and genetic associations between corneal thickness and glaucoma.

Main Results:

  • CCT has recognized prognostic value in ocular hypertension but less certainty in other glaucoma suspects and established glaucoma.
  • Variations in CCT can cause tonometry artifacts; validated correction algorithms are lacking.
  • Newer tonometry methods may be less influenced by CCT but have limited clinical application.
  • Demographics, environment, treatment, and device influence CCT, complicating interpretation.
  • Corneal biomechanical properties may offer better insights than CCT alone.

Conclusions:

  • The clinical significance of CCT in glaucoma is established but debated.
  • Corneal biomechanical properties show potential as a more significant indicator in glaucoma than CCT.
  • Further research into corneal biomechanics is warranted for improved glaucoma assessment.