Clinical evaluation of the DBR A-scan unit

Journal - American Intra-Ocular Implant Society
G E Johns

Abstract

One hundred and eight eyes of 106 patients were evaluated preoperatively with the DBR-300 A-scan ultrasonic instrument. Intraocular lens power was then calculated using the formula supplied with the instrument, and the accuracy of the instrument was evaluated. It was found that 61.1% of the eyes were within +/- 1.00 D of the calculated refractive error and 81.5% of the eyes were within +/- 1.50 D of the calculated refractive error when using a standard 3.5-mm anterior chamber depth. Various factors were then analyzed to determine which factors contributed to the inaccuracy of the instrument. No single factor could be found to account for the slight tendency toward myopia, although several were found to contribute. No single factor was found to contribute to large errors.

References

Nov 1, 1951·American Journal of Ophthalmology·G FLOYD

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Citations

Jan 1, 1984·Journal - American Intra-Ocular Implant Society·H J Shammas
Jan 1, 1982·Journal - American Intra-Ocular Implant Society·H J Shammas
Jan 1, 1986·The British Journal of Ophthalmology·S M Thompson, V Mohan-Roberts
Apr 1, 1983·The British Journal of Ophthalmology·J S Hillman
Jan 1, 1989·The British Journal of Ophthalmology·P T GregoryD L Boase
Jan 1, 1982·The British Journal of Ophthalmology·J S Hillman
Dec 16, 1981·Documenta Ophthalmologica. Advances in Ophthalmology·C Huber

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