The toric workflow
- Confirm corneal cylinder: compare keratometry, topography/tomography, magnitude, and meridian agreement.
- Assess posterior cornea: document whether posterior corneal astigmatism is measured, estimated, or externally verified.
- Set surgeon SIA: use surgeon-specific defaults when available and avoid generic assumptions when outcomes suggest otherwise.
- Review axis confidence: flag low-confidence axis agreement, irregular cornea, unstable tear film, or device disagreement.
- Estimate residual cylinder: compare available toric options and residual astigmatism, then show rotation sensitivity.
- Document the surgical plan: intended incision, alignment axis, backup lens thinking, and warnings.
What PrecisionIOL can add
Axis confidence
Show whether the axis is high, moderate, or low confidence based on device agreement and corneal regularity.
Posterior cornea assumption
Make the assumption visible so the surgeon knows whether it was measured or estimated.
Rotation sensitivity
Show how degrees of rotation can affect effective cylinder correction and residual astigmatism.
Documentation
Produce a surgical planning note for axis, SIA, lens option, residual cylinder, and patient counseling.
Why calculator outputs can differ
Toric planning is affected by more than anterior keratometry. Posterior corneal assumptions, surgeon SIA, axis agreement, device source, and formula choice can all change the final cylinder and axis discussion. A useful workflow should make those assumptions visible before the lens is ordered.
For premium toric pathways, the toric plan should connect to patient goals and optical tradeoffs. An EDOF toric discussion, for example, should make residual cylinder, axis confidence, halos, contrast expectations, and reading limitations visible before counseling.
Open the toric planner
Review corneal analysis, toric options, vector analysis, axis confidence, posterior cornea assumptions, SIA defaults, and rotation sensitivity.
Open Toric Planner