Accuracy and reproducibility of biometry using partial coherence interferometry.
OBJECTIVE
To determine whether partial coherence interferometry is comparable to standard contact ultrasonic biometry in accuracy, reproducibility, and ease of use.


METHODS
Academic university practice.


METHODS
In this prospective study, simultaneous biometry was performed in 91 consecutive patients (111 eyes) using partial coherence interferometry (IOLMaster, Zeiss Humphrey Systems) and ultrasonic biometry (I(3), Innovative Imaging, Inc.). The differences between the predicted spherical equivalent in diopters (D) and the actual results with both techniques were compared.


RESULTS
The IOLMaster was significantly better in the mean absolute error (0.533 D +/- 0.589 [SD] versus 0.757 +/- 0.723 D; P = .012) and the percentage of eyes within +/-0.5 D (61.2% versus 42.3%; P = .003) and +/-1.0 D (87.4% versus 77.5%; P =.05) of the predicted refraction.


CONCLUSIONS
The IOLMaster was more accurate and reproducible than the contact ultrasonographic technique.
Connors
Rafe
R
Department of Ophthalmology and Visual Sciences, John A. Moran Eye Center, Salt Lake City, Utah 84132, USA.
Boseman
Peter
P
Olson
Randall J
RJ
D001699:Biometry / Q000379:methods*; D002387:Cataract Extraction; D003941:Diagnostic Techniques, Ophthalmological; D005123:Eye / Q000473:pathology*; D006801:Humans; D007368:Interferometry / Q000379:methods*; D019654:Lens Implantation, Intraocular; D008027:Light; D011446:Prospective Studies; D012030:Refractive Errors / Q000175:diagnosis*; D015203:Reproducibility of Results