Pdf ascan biometry of cataractous eyes researchgate. Contact versus immersion biometry of axial length before. Axial length measurement is one of the crucial measurements necessary for predicting. The measurement of anterior chamber depth and axial length with. For further reading, we highly recommend the book ascan axial length measurements by sandra frazier byrne. With the advent of optical coherence biometry, we have accurate measurements of the axial length, so the previous issues of inadvertently measuring a staphyloma with manual ascan are largely gone. Applanation ascan biometry axial length measurements ultrasound. Contact a scan is used to determine the axial length for calculating. In conclusion it can thus be said that the accuracy of ultrasonic measurement of the axial length of the eye with the sonometrics digital biometrie ruler, model dbr300, is of the order of 0. Axial length measurements by contact and immersion techniques. Contact ascan is used to determine the axial length for calculating. Cataract is defined as the condition of eye dealing with opacification. A handbook for iol calculations by sandra frazier byrne 1 edition first published in 1995 not in library. The ultrasound axial length of the eye is commonly measured using either.
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