• Users Online: 189
  • Print this page
  • Email this page
ORIGINAL ARTICLE
Year : 2017  |  Volume : 55  |  Issue : 3  |  Page : 177-181

Wavefront analysis: An additional tool for detection of keratoconus


Rajan Eye Care Hospital Pvt Ltd, Chennai, Tamil Nadu, India

Correspondence Address:
Dr. Sujatha Mohan
Rajan Eye Care Hospital Pvt Ltd, 5, Vidyodaya 2nd Street, T. Nagar, Chennai - 600 017, Tamil Nadu
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/tjosr.tjosr_25_17

Get Permissions

Aims: The aim of this study is to analyze the role of wavefront analysis as an additional tool for the detection of keratoconus in three groups of patients (i.e., simple refractive errors, high astigmatism, and keratoconus). Design: This study was a prospective comparative study. Patients and Methods: In this prospective comparative study, a total of 115 eyes of 62 patients were examined. All the patients had a complete examination done, which included best spectacle-corrected visual acuity, slit-lamp and fundus examination, and corneal topography for diagnosis of keratoconus. Higher-order aberrations (HOAs) (coma, spherical aberration, and trefoil) were examined using Tscherning aberrometer, based on WaveLight® analyzer II. Statistical Analysis: The one-way analysis of variance test was used. Results: Spherical aberrations were reported highest in the patients with high astigmatism (mean value: 0.149), which was statistically significant when compared to simple refractive errors (P = 0.046). Trefoil aberrations were reported highest in patients with high astigmatism group (mean value: 5.579) in comparison to the other two groups (i.e., simple refractive errors and keratoconus) but were not statistically significant (P > 0.05). Coma and total aberrations were reported highest in keratoconus group (mean value: 0.314 and 2.058, respectively) in comparison to other groups (i.e., simple refractive error and high astigmatism), which was found to be highly significant (P = 0.000). Root-mean-square values of Zernike coefficient polynomials up to the third order were analyzed. Conclusions: This study highlights that assessment of HOAs using wavefront analysis can be used as an additional tool in the early diagnosis of keratoconus in addition to other standard methods.


[FULL TEXT] [PDF]*
Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed365    
    Printed43    
    Emailed0    
    PDF Downloaded47    
    Comments [Add]    

Recommend this journal