Table 2.
Differences between classic IOL formulas: overview of the input variables required by each formula.
| Haigis | HofferQ | Holladay-1 | Holladay-2 | SRK/T | SRK II | Olsen | |
|---|---|---|---|---|---|---|---|
| K | x⁎ | x | x | x | x | x | x |
| AL | x | x | x | x | x | x | x |
| ACD | x | x | x | ||||
| LT | x | x | |||||
| W-t-W | x | x | |||||
| Age | x | ||||||
| Rxpre | x |
K: corneal power, AL: axial length, ACD: (phakic) anterior chamber depth, LT: thickness of phakic lens, W-t-W: White-to-White diameter, Rxpre: preoperative refraction.
⁎
The Haigis formula requires radii of curvatures in [mm] instead of corneal powers in [D].