The Barrett Rx Formula uses both the Barrett Universal II formula and the Barrett Toric Calculator to perform its analysis. It provides anterior segment surgeons with information that identifies how much to rotate the toric IOL in a patient with residual ametropia and it also determines whether exchanging and/or rotating the IOL to adjust spherical and toric powers will improve the postoperative refractive result. Additionally, surgeons can use the Barrett Rx Formula to calculate the appropriate strength of a piggyback IOL.
Access the Barrett Rx Formula through the website: http://calc.apacrs.org/barrett_rx105/
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