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The accuracy of ultrasonic determination of axial length in pseudophakic eyes
Author(s) -
Olsen Thomas
Publication year - 1989
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.1989.tb00743.x
Subject(s) - scanner , ultrasonic sensor , ultrasound , materials science , optics , biomedical engineering , physics , acoustics , medicine
. The axial length was calculated by refractive means in 206 pseudophakic eyes and compared with the axial length measured by ultrasound using a Kretz 7200 MA A‐scanner or a Sonometrics DBR 400 scanner. The difference (± sd) between the calculated and the measured axial length was 0.13 mm (± 0.54) and 0.08 mm (± 0.28) using the Kretz and Sonometrics equipment, respectively ( P < 0.01). The lower variation between the calculated and the measured axial length observed with the Sonometrics scanner indicated this instrument to be the most accurate. The calculated axial length may be used in future studies on the clinical accuracy of ultrasonic equipment.