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A-Scan Biometry: Ultrasound Principles, Ultrasound Biometry Instrumentation, Accuracy and Standard D

High quality contact A-scan of the phakic eye. Note the 5 high-amplitude spikes and the steeply rising retinal spike, as well as the good resolution of the separate ... In the case of a cataractous lens, multiple spikes occur within the central lens area ...

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