Accuracy of Intraocular Lens Power Calculation Formulas for Highly Myopic Eyes

Table 1

Demographics and preoperative biometrics of the study population.

Parameter	Value
	Plus-power IOL	Minus-power IOL	Zero-diopter IOL	All
Enrolled subjects ()	158	12	1	171
Eyes ()	158	12	1	171
Gender, (%):
Male	80 (51%)	6 (50%)	1	87 (51%)
Female	78 (49%)	6 (50%)	—	84 (49%)
Age (y)
Mean ± SD	57.72 ± 12.61	51 ± 15	41	57.65 ± 12.53
Range	20 to 92	32 to 80	—	20 to 92
Axial length (mm)
Mean ± SD	28.77 ± 2.15	33.81 ± 1.90	34.44	29.14 ± 2.50
Range	26.01 to 34.63	30.20 to 37.31	—	26.01 to 37.31
Anterior chamber depth (mm)
Mean ± SD	3.47 ± 0.39	3.34 ± 0.47	3.45	3.46 ± 0.40
Range	2.34 to 4.17	2.57 to 5.11	−	2.34 to 5.11
Keratometric value (D)
Mean ± SD	43.51 ± 2.19	44.62 ± 2.24	43.53	43.61 ± 2.22
Range	40.36 to 48.05	41.95 to 48.19	—	40.36 to 48.19
IOL power (D)
Mean ± SD	9.16 ± 4.24	−2.75 ± 1.42	0	8.21 ± 5.28
Range	+1.00 to +20.00	−5.00 to −1.00	—	−5.00 to +20.0