Table 4 Summaries of recent studies that assessed the IOL power calculation formulas in cataract patients with prior radial keratotomy

Dawson [8]

USA

47 eyes (31 patients)

True-K (0.50), intraoperative aberrometry (0.48)

True-K (51.1%), intraoperative aberrometry (55.3%)

True-K (80.8%), intraoperative aberrometry (80.8%)

Leite [13]

Brazil

108 eyes

NR

Haigis (43.5%), True-K (42.6%)

Haigis (65.7%), True-K (75.9%)

Turnbull [9]

Australia

52 eyes (34 patients)

TKH (0.275), TKPH (0.382), TKNH (0.330), Haigis (0.406), Holladay (0.504), Haigis [-0.50 offset] (0.569), Potvin-Hill (0.632)

TKH (76.6%), TKPH (75.0%), TKNH (69.2%), Haigis (69.2%), Holladay (50.0%), Haigis [-0.50 offset] (46.2%), Potvin-Hill (40.4%)

TKH (97.9%), TKPH (95.8%), TKNH (92.3%), Haigis (92.3%), Holladay (84.6%), Haigis [-0.50 offset] (82.7%), Potvin-Hill (69.2%)

Patel [10]

India

54 eyes (36 patients)

NR

Atlas 1–4 (19.44%), IOLMaster (22.22%), True-K (22.22%), average IOL power (27.78%), minimum IOL power (22.22%), maximum IOL power (22.22%)

Atlas 1–4 (47.22%), IOLMaster (50.00%), True-K (50.00%), average IOL power (58.33%), minimum IOL power (52.78%), maximum IOL power (50.00%)

Curado [11]

Brazil

52 eyes (34 patients)

True-K (0.34), ORA (0.53), SRK/T (0.54), Hoffer Q (0.51), Haigis (0.54), Holladay 1 (0.57), Holladay 2 (0.44)

True-K (63.5%), ORA (48.1%), SRK/T (44.2%), Hoffer Q (48.1%), Haigis (53.8%), Holladay 1 (36.5%), Holladay 2 (57.7%)

True-K (88.5%), ORA (80.7%), SRK/T (76.9%), Hoffer Q (84.6%), Haigis (75.0%), Holladay 1 (76.9%), Holladay 2 (84.6%)

Wang [14]

USA

44 eyes (32 patients)

Haigis (0.47), True-K (0.55), Haigis-TK (0.57)

Haigis (54.5%), True-K (43.2%), Haigis-TK (43.2%)

Haigis (75.0%), True-K (70.5%), Haigis-TK (72.7%)

This study

China

47 eyes (28 patients)

True-K (0.62), Holladay 1 (D–K) (1.16), Haigis (0.76)

True-K (46.8%), Holladay 1 (D–K) (19.1%), Haigis (34.0%)

True-K (68.1%), Holladay 1 (D–K) (40.4%), Haigis (70.2%)