Comparison between 2 recent optical biometry devices

Autor: M. Boissonnot, Pl Dighiero, M Djabarouti, Jj Gicquel, I Badat, Martial Mercie
Rok vydání: 2011
Předmět:
Zdroj: Acta Ophthalmologica. 89
ISSN: 1755-3768
1755-375X
DOI: 10.1111/j.1755-3768.2011.2363.x
Popis: Purpose To compare the refractive precision and the ease of use of 2 recent optical biometry devices. Methods Fifty patients (50 eyes with grade II and over cataracts according to the Oxford classification) underwent optical biometry measurements with 2 optical biometers, the IOLMaster 500 (partial coherence interferometry [PCI] device) and the Lenstar LS 900 (optical low-coherence reflectometry [OLCR] device. Keratometry was also measured in each patient with the NIDEK ARK 900 keratometer. IOL power calculation was performed using the SRK-T formula. The duration of the actual measurement process was also recorded. Results IOL power calculation could not be achieved in 2 patients with the PCI biometer (1 post traumatic cataract, 1 dense subcapsular cataract) versus 5 patients with the OLCR device (1 post traumatic cataract, 1 dense subcapsular cataract and 3 loss of fixation). There was an excellent correlation between the keratometric measurements obtained with both biometers and the ones obtained with the NIDEK ARK 900 keratometer. Measurements with the new OLCR device took significantly longer than with the PCI biometer. Conclusion The accuracy of the IOL Master 500 and Lenstar 900 make them the 2 new gold standards of optical biometry. Both of them are easy to use and due to their non contact technology they prevent the potential transmission of non conventional infectious agents (theoretically possible with contact biometers).
Databáze: OpenAIRE
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