Station eight
(5 minutes allowed)
A doctor who recently began his ophthalmic training was trained to perform A scan for patient's biometry. An audit
performed on his biometry showed that 70% of the patients had a post-operative refraction of >-1.00DS of spherical equivalent from what the surgeons intended. 

a. What is the most likely reason for his error during A-scanning?

b. Name two methods which may be used to improve the biometry results. 



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