[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 23, Issue 3 (Spring 2018) ::
3 2018, 23(3): 182-188 Back to browse issues page
Pentacam Indices Affecting Elevation Difference of Cornea in Patients with Mild and Moderate Keratoconus
R. Soltani Moghadam , M. Akbari , Y. Alizadeh , A. Medghalchi , M. Zareie Ghanavati , H. Ghasemi , M. Pariman , Y. Khakpour , S. Kianmehr
Eye Research Center, Department of Eye, Amiralmomenin Hospital , Guilan University of Medical Science, Guilan, Iran
Abstract:   (46 Views)
Purpose: Pentacam indices affecting elevation difference of cornea in patients with mild and moderate keratoconus.
Methods: A total of 115 eyes were enrolled in different clinical stages. Elevation difference of anterior and posterior of cornea from Belin Ambrosio enhance system achieved. K max, K mean, corneal astigmatism, thinnest corneal thickness, horizontal and vertical distances of thinnest point to apex and asphericity (all measured by pentacam) were correlated with anterior and posterior elevation differences of cornea (measured with Belin/Ambrosio Enhanced Ectesia Display of Pentacam). All measured parameters were classified according to Amsler krumeich classification.
Results: Anterior elevation difference of the cornea had a direct and positive correlation with keratometric maximum (K max) (r = 0.88), mean keratometry (r = 0.83), corneal astigmatism (r = 0.361), and vertical point of thinnest point corneal apex (r= 0.83) and an inverse and positive correlation with with the Thinnest point (r = -0.673) and Asphericity (r= -0.594) (P <0.001) (For all indicators). Correlation between elevation difference posterior with K max (r = 0.849), K mean (r= 0.827), astigmatism (r= 0.26), and vertical point of Thinnest point to corneal apex (r = 0.413) was direct, significant, and positive (P <0.001 for all indices) and correlation between Thinnest point and elevation difference posterior was negative and inverse (r= -0.598; P<0.001). After performing linear step wise regression test, K max (P<0.001), astigmatism (P= 0.005), and K mean (P= 0.007) were the most important Pentacam indices associated with Elevation Anterior, and among the measured Pentacam indices, K mean (P= 0.003), K max (P <0.0001), and astigmatism (P <0.0001) were the strongest indices measured values related to elevation difference posterior, respectively. The best diagnostic points for K max at grade I, grade II, and grade III were 48.4, 51.65, and 74.2, respectively.
Conclusion: K max, K mean, and corneal astigmatism are pentacam indices mostly correlated with anterior and posterior elevation differences of cornea.
Keywords: Elevation Difference, Keratoconus, Pentacam
Full-Text [PDF 431 kb]   (25 Downloads)    
Type of Study: Research | Subject: Ophthalmology
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA code


XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Soltani Moghadam R, Akbari M, Alizadeh Y, Medghalchi A, Zareie Ghanavati M, Ghasemi H, et al . Pentacam Indices Affecting Elevation Difference of Cornea in Patients with Mild and Moderate Keratoconus. 3. 2018; 23 (3) :182-188
URL: http://binajournal.org/article-1-945-en.html


Volume 23, Issue 3 (Spring 2018) Back to browse issues page
مجله چشم‌پزشکی بینا Bina Journal of Ophthalmology
Persian site map - English site map - Created in 0.05 seconds with 31 queries by YEKTAWEB 3790