Agreement between Lenstar and Pentacam in Keratometry and Anterior Chamber Depth Measurements
Journal of Ophthalmic and Optometric Sciences,
Vol. 2 No. 2 (2018),
3 Farvardin 2018
,
Page 1-5
https://doi.org/10.22037/joos.v2i2.28699
Abstract
Purpose: To compare keratometry and anterior chamber depth (ACD) measurements performed using Lenstar LS 900 (Haag-Streit AG, Switzerland) and the Pentacam (Oculus, Weltzar, Germany) devices in healthy eyes.
Method: Sixty eyes of 30 healthy volunteers were included in this prospective study. Keratometry and ACD measurements were obtained using Lenstar, followed by Pentacam on the same day. The readings of the two instruments were compared to evaluate their agreement.
Results: The mean age of participants was 40.01 ± 12.29 years (Range 10 to 65years). The mean ACD was 2.762 ± 0.281 millimeters when measured using Lenstar and 2.801 ± 0.273 millimeters when measured with Pentacam (P = 0.03). The average mean keratometry was 44.45 ± 1.65 diopter when measured with Lenstar and 44.16 ± 1.55 diopter when measured using Pentacam (P < 0.001). The Bland-Altman plots demonstrated a wide range of inter-device differences in mean keratectomy and also ACD measurements between the two devices.
Conclusion: Our findings suggest that the ACD and keratometry measurements obtained using the Lenstar and Pentacam devices might not be interchangeable.
Key words: Anterior Chamber; Cornea; Pentacam; Lenstar.
How to Cite
References
Devereux JG, Foster PJ, Baasanhu J, Uranchimeg D, Lee PS, Erdenbeleig T, et al. Anterior chamber depth measurement as a screening tool for primary angle-closure glaucoma in an East Asian population. Arch Ophthalmol. 2000;118(2):257-63.
Congdon NG, Youlin Q, Quigley H, Hung PT, Wang TH, Ho TC, et al. Biometry and primary angle-closure glaucoma among Chinese, white, and black populations. Ophthalmology. 1997;104(9):1489-95.
Olsen T, Corydon L, Gimbel H. Intraocular lens power calculation with an improved anterior chamber depth prediction algorithm. J Cataract Refract Surg. 1995;21(3):313-9.
Holladay JT, Gills JP, Leidlein J, Cherchio M. Achieving emmetropia in extremely short eyes with two piggyback posterior chamber intraocular lenses. Ophthalmology. 1996;103(7):1118-23.
Allemann N, Chamon W, Tanaka HM, Mori ES, Campos M, Schor P, et al. Myopic angle-supported intraocular lenses: two-year follow-up. Ophthalmology. 2000;107(8):1549-54.
Mimouni F, Colin J, Koffi V, Bonnet P. Damage to the corneal endothelium from anterior chamber intraocular lenses in phakic myopic eyes. Refract Corneal Surg. 1991;7(4):277-81.
Uçakhan OO, Ozkan M, Kanpolat A. Corneal thickness measurements in normal and keratoconic eyes: Pentacam comprehensive eye scanner versus noncontact specular microscopy and ultrasound pachymetry. J Cataract Refract Surg. 2006;32(6):970-7.
Lackner B, Schmidinger G, Skorpik C. Validity and repeatability of anterior chamber depth measurements with Pentacam and Orbscan. Optom Vis Sci. 2005;82(9):858-61.
Cruysberg LP, Doors M, Verbakel F, Berendschot TT, De Brabander J, Nuijts RM. Evaluation of the Lenstar LS 900 non-contact biometer. Br J Ophthalmol. 2010;94(1):106-10.
Uçakhan OÖ, Akbel V, Bıyıklı Z, Kanpolat A. Comparison of corneal curvature and anterior chamber depth measurements using the manual keratometer, Lenstar LS 900 and the Pentacam. Middle East Afr J Ophthalmol. 2013;20(3):201-6.
Huang J, Pesudovs K, Wen D, Chen S, Wright T, Wang X, et al. Comparison of anterior segment measurements with rotating Scheimpflug photography and partial coherence reflectometry. J Cataract Refract Surg. 201;37(2):341-8.
- Abstract Viewed: 230 times
- PDF Downloaded: 146 times
