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Impressum
Comparison of IOL-Master™ and Orbscan II™ measurement for anterior chamber depth
Frisch I. B., Rabsilber T., Becker K. A., Auffarth G. U.
Department of Ophthalmology, Ruprecht-Karls-University of Heidelberg, INF 400, D-69120 Heidelberg, Germany, Dir.: Prof. Dr. H.E. Völcker
Purpose: To evaluate and compare anterior chamber depth (ACD)
measurement by IOL-Master™ (Zeiss, Germany) and Orbscan II™
(Orbtec, Inc.,USA).
Methods: In this prospective study we measured ACD of 159 eyes
of 155 using the Zeiss IOL-Master and Orbscan II.
Results: Average patient age was 53.2±19.5 (range 18 to
86) years. Mean ACD, measured by the Zeiss IOL-Master was 3.34±0.43mm
(range 2.01 to 4.24mm). Mean ACD measured by Orbscan II was 3.37±0.49mm
(range 2.01 to 5.92mm). Mean total axial length was 23.84±2.68mm
(range 20.35 to 31.41mm). The correlation of ACD between both methods
was R=0.67 (p<1.0). The correlation of ACD and total axial length was
0.65. There was only a weak correlation between axial length and ACD measures
of both devices. There was no correlation between the amount of deviation
of both systems and axial length.
Conclusion: Zeiss IOL-Master and Orbscan II are equally efficient
and reliable for measurement.