International Journal of Keratoconus and Ectatic Corneal Diseases

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VOLUME 5 , ISSUE 3 ( September-December, 2016 ) > List of Articles

RESEARCH ARTICLE

Comparison of Anterior Chamber Parameters between Normal and Keratoconus Eyes using Scheimpflug Photography

Nagla Hassan Ali, Mohammed Othman AbdElKhalek, Hanan Elghoneimy

Citation Information : Ali NH, AbdElKhalek MO, Elghoneimy H. Comparison of Anterior Chamber Parameters between Normal and Keratoconus Eyes using Scheimpflug Photography. Int J Kerat Ect Cor Dis 2016; 5 (3):105-108.

DOI: 10.5005/jp-journals-10025-1130

Published Online: 01-12-2016

Copyright Statement:  Copyright © 2016; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

To evaluate anterior chamber indices including anterior chamber depth (ACD) and anterior chamber volume (ACV) with the progression of keratoconus using a rotating Scheimpflug camera to determine the sensitivity and specificity of these parameters in discriminating keratoconus from normal eyes.

Materials and methods

After full ophthalmological examination in the Memorial Institute of Ophthalmic Research, the patients are divided into two groups: Group I consisting of 50 eyes of normal control. Group II consists of 50 eyes of moderate keratoconus. All the subjects were evaluated with a Pentacam Scheimpflug camera (Oculus, Wetzlar, Germany). Keratoconic eyes were evaluated by vertical asymmetry (VI), keratoconus index (KI), thinnest corneal thickness (TCT) with front elevation at thinnest location (F.Ele.Th) and back elevation at thinnest location (B.Ele.Th) and then divided into three groups according to mean keratometer (K) readings: Mild (K = less than 47.0 D), moderate (K = 47.0 to 52.0 D), and severe (K = 52.0 D or higher), and ACD and ACV were obtained after exclusion of mild and severe cases.

Results

With the progression of the disease, there was statistically significant differences in ACD and ACV measurements between the normal and moderate keratoconus eyes with progressive increase in the ACD and ACV with disease progression.

Conclusion

Anterior chamber parameters including depth and volume showed significant increase with moderate keratoconus than control.

How to cite this article

Ali NH, AbdElKhalek MO, El Ghonemy HM. Comparison of Anterior Chamber Parameters between Normal and Keratoconus Eyes using Scheimpflug Photography. Int J Kerat Ect Cor Dis 2016;5(3):105-108.


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  1. Reliability and repeatability of the Pentacam on corneal curvatures. Clin Exp Optom 2009 Mar;92(2):110-118.
  2. Corneal topography with Scheimpflug imaging and videokeratography: comparative study of normal eyes. J Cataract Refract Surg 2009 Jun;35(6):1072-1081.
  3. Novel pachymetric parameters based on corneal tomography for diagnosing keratoconus. J Refract Surg 2011 Oct;27(10):753-758.
  4. Corneal thickness measurements in normal and keratoconic eyes: Pentacam comprehensive eye scanner versus noncontact specular microscopy and ultrasound pachymetry. J Cataract Refract Surg 2006 Jun;32(6):970-977.
  5. The distribution of dioptric power: ellipsoids of constant probability density. Ophthalmic Physiol Opt 1991 Oct;11(4):381-384.
  6. Comparison of anterior chamber depth of normal and keratoconus eyes using Scheimpflug photography. Eye Contact Lens 2009 May;35(3):120-122.
  7. Anterior segment characteristics of keratoconus eyes in a sample of Asian population. Contact Lens Anterior Eye 2013 Aug;36(4):191-195.
  8. Evaluation of anterior segment parameters in keratoconic eyes measured with the Pentacam system. J Cataract Refract Surg 2007 Oct;33(10):1708-1712.
  9. Posterior corneal elevation and back difference corneal elevation in diagnosing forme fruste keratoconus in the fellow eyes of unilateral keratoconus patients. J Cataract Refract Surg 2013 Sep;39(9):1348-1357.
  10. Measurements of anterior segment parameters using three different non-contact optical devices in keratoconus patients. Int J Ophthalmol 2013 Aug 18;6(4):521-525.
  11. Relationship between anterior chamber depth, refractive state, corneal diameter, and axial length. J Refract Surg 2000 May-Jun;16(3):336-340.
  12. Implantation of artisan toric phakic intraocular lenses for the correction of astigmatism and spherical errors in patients with keratoconus. J Refract Surg 2005 May-Jun;21(3):218-222.
  13. Angle-supported phakic intraocular lenses in eyes with keratoconus and myopia. J Cataract Refract Surg 2003 Aug;29(8):1530-1536.
  14. Assessment of anterior segment parameters of keratoconus eyes in an Australian population. Optom Vis Sci 2014 Jul;91(7):803-809.
  15. Comparison of central corneal thickness, thinnest corneal thickness, anterior chamber depth, and simulated keratometry using galilei, pentacam, and sirius devices. Cornea 2014 Jun;33(6):582-586.
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