Table 1 Clinical data of patients along with the IOL design performed with 3 different devices
Patient 1. | Patient 2. | |
|---|---|---|
Preoperative clinical data | ||
Vitreoretinal procedure; date of intervention; age at the operation | scleral buckling on the right eye (encircling buckle and a radial sponge); September 2011; 67 years old | 23-gauge vitrectomy on the left eye; December 2013; 54 years old |
Cause of refractive errors | Keratoconus | |
UCDVA | 20/200 | 20/500 |
CDVA | 20/50 with −6.0 + 4.5 x 20 degrees | 20/50 with −10.5 + 4.0 x 15 degrees |
Preoperative measurements and IOL design | ||
Topcon KR8100 keratorefractometer | K1: 42.75D / 125° K2: 46.25D / 35° Calculated IOL type: AcrySof Toric T7 | K1: 48.25D / 40° K2: 50.75D / 130° Calculated IOL type: AcrySof Toric T6 |
Pentacam HR | K1: 42.1D / 129° K2:45.3D /39° (Fig. 1) Calculated IOL type: AcrySof Toric T7 | K1: 48.0 D / 45° K2: 50.2 D / 135° Calculated IOL type: AcrySof Toric T6 |
Zeiss IOL Master | K1: 43.05D / 127° K2: 45.98 D / 37° Calculated IOL type: AcrySof Toric T6 | K1: 47.87 D / 46° K2: 50.60 D / 136° Calculated IOL type: AcrySof Toric T6 |
Axial length (mm) Zeiss IOL Master | 24.47 mm | 23.92 mm |
Implanted toric IOL | +17.5D AcrySof Toric SN6AT7 | +15.0 D AcrySof Toric SN6AT6 |
Axis of IOL positioning | 35° | 44° |
Time of phacoemulsification | February 2014 | June 2014 |
Postoperative measurements at 1 month | ||
Topcon KR8100 keratorefractometer | K1: 42.25 D 125° K2: 46.25 D 35° | K1: 47.5 D 30° K2: 50.75 D 120° |
Pentacam HR | K1: 41.6 D 136° K2: 45.5 D 46° | K1: 47.4 D 37° K2: 50.0 D 127° |
UCDVA | 20/25 | 20/30 |
CDVA | 20/20 with −1.0 x 120 degrees | 20/20 with −0.5 −0.75 x 95 degrees |
Postoperative measurements at 12 months | ||
Topcon KR8100 keratorefractometer | K1: 42.25 D K2: 46.25 D S: -0.5D / C: +1.0D/ SE: 0.0D | K1: 48.0 D K2: 50.75 D S: -2.0 / C: +0.75D/ SE: -1.75 D |
Pentacam HR | K1: 41.6 D K2: 45.4 D | K1: 47.7 D K2: 50.5 D |
UCDVA | 20/25 | 20/20 |
CDVA | 20/20 with - 0.5 x 115 degrees | 20/20 |