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Axial length is measured using ultrasound A scan |
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A drop of local anesthesia is instilled on to the eye |
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The patient is asked to fixate centrally |
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Examiner gently places a probe on the eye |
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Ultrasound waves are sent to the eye through the probe |
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The axial length readings are displayed on to a screen. |
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The examiner selects the appropriate reading |
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IOL power calculations are then done accordingly |