The Asia-Pacific Journal of Ophthalmology

Asia-Pacific Journal of Ophthalmology:

Issue 4, July/August 2017 Review Article

IOL Power Calculation in Short and Long Eyes

Hoffer, Kenneth J.; Savini, Giacomo

Author Information

From the *Stein Eye Institute, University of California, Los Angeles, CA; †St. Mary’s Eye Center, Santa Monica, CA; and ‡G.B. Bietti Foundation IRCCS, Rome, Italy.

Reprints: Kenneth J Hoffer, MD, FACS, St. Mary’s Eye Center, 411 Lincoln Blvd, Santa Monica, CA 90402. E-mail:


An analysis of the studies published in the past 50 years reveals that the Haigis, Hoffer Q, and Holladay 2 formulas are the best options for intraocular lens power prediction in short eyes (<22 mm). In long eyes (>26 mm), the Barrett Universal II, Haigis (with optimized constants), Olsen, and SRK/T formulas provide the most accurate outcomes for intraocular lens power prediction.

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