J Korean Ophthalmol Soc.  2012 Nov;53(11):1584-1590.

Comparison of Corneal Measurement Values between Two Types of Topography

• Lee DM
• Ahn JM
• Seo KY
• Kim EK
• Kim TI

Abstract

PURPOSE
To compare the corneal measurements of Sirius and Pentacam in normal cornea and post-corneal refractive surgery patients.
METHODS
Subjects were tested by Pentacam (OCULUS, Wetzlar, Germany), and Sirius (CSO, Firenze, Italy). Measurements included central corneal thickness, thinnest corneal thickness, anterior chamber depth, anterior chamber volume, iridocorneal angle, corneal volume, pupil size, and curvature of cornea.
RESULTS
A total of 88 eyes from 44 patients were included in the present study. When comparing Sirius and Pentacam in the normal cornea, corneal thickness (p = 0.693), thinnest corneal thickness (p = 0.386), anterior chamber depth (p = 0.155), anterior chamber volume (p = 0.650), and pupil diameter (p = 0.124) did not differ significantly. Corneal curvature (p < 0.001), corneal volume (p = 0.023), and iridocorneal angle (p < 0.001) were statistically different. When comparing Sirius and Pentacam in post-corneal refractive surgery patients, corneal thickness (p = 0.056) did not differ significantly. There was a statistical difference in corneal curvature (p < 0.001), thinnest corneal thickness (p = 0.019), anterior chamber depth (p < 0.001), anterior chamber volume (p < 0.001), iridocorneal angle (p < 0.001), corneal volume (p < 0.001), and pupil diameter (p < 0.001).
CONCLUSIONS
Anterior segment measurements with Pentacam and Sirius showed differences in post-corneal refractive surgery patients.

Keyword

Cornea; Pentacam; Refractive surgery; Sirius; Tomography

MeSH Terms

Anterior Chamber
Cornea
Eye
Humans
Pupil
Refractive Surgical Procedures

Figure

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  Figure 1 Pearson correlation in normal cornea.

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  Figure 2 Pearson correlation in post-corneal refractive surgery patients.

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