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. 2014 Jun 18;7(3):441–445. doi: 10.3980/j.issn.2222-3959.2014.03.10

Figure 2. Second quality control measure for immersion B-scan ultrasound biometry.

Figure 2

The intersection of the vector an ultrasound sampling line and the retina was determined to be 4.5 mm from the optic disc or 3 mm from the optic disc edge.