IOL Calculator
Guides

Evidence-based planning guides for cataract surgeons, connected to the IOLDx calculator, toric planner, and vision simulator.

IOL PlannerCompare transparent formula spread, premium decision rationale, and patient workflow burden. Vision SimulatorShow halos, reading range, night driving, and FDA defocus curve tradeoffs. Toric CalculatorEstimate residual astigmatism, axis confidence, rotation sensitivity, and SIA assumptions.
Premium Decision Support
Premium IOL Decision Support — Match Lens Strategy to Patient Goals and Ocular Risk
A surgeon-controlled planning layer for premium IOL selection, dysphotopsia risk, patient matching, tradeoffs, and documentation.
IOLDx Clinical · Product guide · Updated August 12, 2026
Complex Eye Planning
Post-LASIK and Complex Eye IOL Planning — LASIK, RK, Long Eye, Short Eye
A dedicated workflow for post-refractive eyes, axial length extremes, irregular cornea, ocular surface disease, and documentation risk.
IOLDx Clinical · Workflow guide · Updated August 12, 2026
Toric Workflow
Toric IOL Workflow — Biometry, Posterior Cornea, SIA, Axis Planning
Go beyond a toric calculator with axis confidence, posterior cornea assumptions, rotation sensitivity, and surgical documentation.
IOLDx Clinical · Workflow guide · Updated August 12, 2026
Formula Evidence
IOL Formula Evidence Hub — Formula-Aware Planning Without Recreating Proprietary Calculators
Evidence framing, formula disagreement, official external calculator link-outs, and clear boundaries around proprietary formula rights.
IOLDx Clinical · Evidence guide · Updated August 12, 2026
Adjustable IOL Workflow
Preoperative Planning vs Postoperative Adjustability — Where LAL Workflows Fit
Compare adjustable IOL pathways against preoperative planning by visits, compliance, cost, target strategy, and clinic/ASC workflow.
IOLDx Clinical · Strategy guide · Updated August 12, 2026
Formula Comparison
SRK/T vs Barrett Universal II — When Does Formula Choice Actually Matter?
For average eyes, formula differences are modest. At the extremes of axial length, selection has a measurable effect on outcomes.
IOLDx Clinical · PubMed-based · Updated August 9, 2026
Post-Refractive
Post-Myopic LASIK IOL Calculation — Why Standard Keratometry Misleads
Myopic LASIK creates an oblate cornea that breaks standard IOL formula assumptions. The mechanism, the error, and how to correct it.
IOLDx Clinical · PubMed-based · Updated August 9, 2026
Post-Refractive Workflow
Post-Refractive IOL Calculator Workflow — LASIK, PRK, and RK
Historical-data status, official Barrett True-K and ASCRS link-outs, formula-spread documentation, and warning states for post-LVC planning.
IOLDx Clinical · Workflow guide · Updated August 9, 2026
Biometry Import
Device-Agnostic Biometry Import — IOLMaster, ARGOS, Pentacam, Cassini
A neutral-planning-layer roadmap for manual entry, scan upload, CSV parsing, topography/tomography reconciliation, and surgeon-controlled verification.
IOLDx Clinical · Workflow guide · Updated August 9, 2026
Premium Counseling
Premium IOL Counseling — Monofocal, Toric, EDOF, Multifocal, and LAL
Patient-facing summaries, tradeoff language, and documentation prompts for premium IOL planning by lens class.
IOLDx Clinical · Workflow guide · Updated August 9, 2026
Toric Planning
Toric IOL Rotation — Alignment, Stability, and Residual Astigmatism
Each degree of misalignment reduces effective cylinder correction by roughly 3.3%. Posterior corneal astigmatism and SIA matter as much as axis marking.
IOLDx Clinical · PubMed-based · Updated August 9, 2026
FDA Data
Defocus Curves Explained — What FDA SSED Data Actually Shows
FDA SSED documents provide high-quality trial data, but cross-platform comparisons require caution. How to read a defocus curve correctly.
IOLDx Clinical · PubMed-based · Updated August 9, 2026
Formula Comparison
Formula Selection in Short Eyes — What the Evidence Actually Shows
For eyes below 22mm, Hoffer Q has a strong evidence base. Modern formulas including Barrett and Kane are competitive. Nanophthalmos is a separate category.
IOLDx Clinical · PubMed-based · Updated August 9, 2026
Surgeon Constants
Haigis a0, a1, a2 — What the Three Constants Actually Do
a0 is a global offset. a1 and a2 are regression terms weighting ACD and AL. Understanding the difference determines how to optimize them.
IOLDx Clinical · PubMed-based · Updated August 9, 2026