ABSTRACT
Evaluation of The accuracy of Hoffer Q formula for intraocular lens [IOL] power calculation in short and long axial lengths of the eye. 100 eyes divided equally into 2 groups: group 1 [50 eyes] with axial length more than 24.5 and group II [50 eyes] with axial length more less than 22. Comparison between both groups was done as regards post operative residual refractive error after IOL implantation using Hoffer Q formula. Insignificant difference between the 2 groups as regard post operative residual refractive error. In short length eyes, the mean postoperative refractive error with Hoffer Q formula was 0.80 +0.33D. In long eyes, the mean postoperative refractive error was 1.23 +0.70D. The results show that the best performing formula was in short eyes [P = 0.012]. Insignificant difference as regards postoperative residual refractive error between both groups but Hoffer Q formula best performed in short eyes