Casos Practicos - Recalculator Toric de IOA 

Case Studies

Case 1

70-year-old man, in-the-bag placement of a toric one-piece IOL (OD).


Refraction data:

Pre-op refraction: -0.50 sph -2.50 cyl at 95º

Post-op refraction: +1.50 sph -1.75 cyl at 50 VA: 1

Recalculator

IOL rotation 17.5º clockwise

After IOL rotation:

Refraction post-op: 0

UCVA: 1

Case 2

55-year-old man, in-the-bag placement of a plate-haptic toric IOL (OS).


Refraction data:

Refraction pre-op: +8.00 sph -7.00 cyl at 175º

Corneal astigmatism: -6.80 at 177º

Refraction post-op: +1.50 sph -1.75 cyl at 135º BCVA: 1

Recalculator

IOL rotation 7.22° clockwise

After IOL rotation by 7º:

Refraction post-op: +0.75 sph (cylinder not supported)

UCVA: 0.9

BCVA: 1

Case 3

63 year-old woman, in-the-bag placement of a toric one-piece IOL


Refraction data:

Refraction pre-op: +0.75 sph -2.50 cyl at 95º

Corneal astigmatism: -1.50 at 100º

Refraction post-op: +0.50 sph -0.75 cyl at 90º BCVA: 1

Owing to discrepancy between pre-op corneal and refractive astigmatism, the lens calculation is based on the corneal astigmatism.

Recalculator

IOL rotation 2.11° clockwise

The rotation calculated is 2º. However, this rotation will not resolve the patient's residual defect so it is decided to opt for LASIK or PRK.

Case 4

30-year-old man, sulcus placement of a phakic toric intraocular lens (OS).


Refraction data:

Refraction pre-op: -4.00 sph -6.50 cyl at 5º

Refraction post-op: +2.75 sph -3.25 cyl at 25º BCVA: 0.9

Recalculator

IOL rotation -13.76º anticlockwise

After IOL rotation by -14º

Refraction post-op: 0

BCVA: 0.9