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Toric IOL calculator by MIOLO
About MIOLO Toric
MIOLO Toric is a free toric IOL calculator that gives the IOL power, the toric cylinder and the implantation axis for cataract surgery in eyes with corneal astigmatism.
What it is for
It plans a toric intraocular lens: spherical equivalent power, cylinder of the toric model and the axis at which to implant it, for the right and the left eye on the same page.
Who it is for and when to use it
It is built for cataract and refractive surgeons when the corneal astigmatism of an eye with no previous corneal refractive surgery is a candidate for correction with a toric lens. After LASIK, PRK, radial keratotomy or in keratoconus, use MIOLO TK.
What you enter
Axial length (AL), K1 and K2 anterior keratometry with their axes, anterior chamber depth (ACD), lens thickness (LT), white-to-white (WTW), the A-constant of the chosen lens, the target refraction, and the surgically induced astigmatism (SIA) with the incision axis, which are required for a toric plan.
What you get
The recommended IOL power, toric cylinder and implantation axis, tables of power and toric options, an eye diagram of the planned alignment, a PDF report that can be downloaded or shared, and, for signed-in surgeons, the option to save the case.
Frequently asked questions
- Is it free?
- Yes. The calculator is free to use, with no fees and no ads.
- Which keratometry should I enter?
- Anterior keratometry (K or SimK) in K1 and K2, not total keratometry (TK), TCRP, TNP or TCP, as noted above the form.
- Why is the SIA required?
- The incision changes the corneal astigmatism, so the toric plan needs the surgically induced astigmatism and the incision axis.
- Can I save and print the result?
- Yes. The PDF report can be downloaded, printed or shared, and signed-in surgeons can save the case to their own records.
- Does it work on mobile?
- Yes. The page adapts to phones and tablets, and the result reads the same as on a desktop.
Further reading
The calculator supports, and does not replace, the surgeon's clinical judgment.