Sir,
One of the purposes of the National Biometry Audit1 was to enhance awareness of the Royal College guidelines on biometry formulae. It is therefore worth highlighting that the guidelines stated in the National Biometry Audit II2 are not the most up-to-date ones from the College. The current guidelines3 suggest, among other possibilities, that the SRK/T formula may be used for all axial lengths. The ease of using one formula for all patients is likely to make compliance with the guidelines even better.
References
Gale RP, Saha N, Johnston RL . National biometry audit. Eye 2004; 18 (1): 63–66.
Gale RP, Saha N, Johnston RL . National biometry audit II. Eye 2006; 20 (1): 25–28.
http://www.rcophth.ac.uk/docs/publications/CataractSurgeryGuidelinesMarch2005Updated.pdf.
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Ali, N. Adherence to College biomerty guidelines. Eye 21, 887 (2007). https://doi.org/10.1038/sj.eye.6702766
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DOI: https://doi.org/10.1038/sj.eye.6702766
