Evidence
IOL Planning Resources

A practical IOL planning resource hub for cataract surgeons.

Use this guide to move from scattered calculators and reference pages into a connected cataract workflow: biometry review, AI biometry validation, formula comparison, toric planning, EDOF planning, post-refractive checks, premium counseling, constants, complex-IOL resources, ASC inventory, OR handoff, and external verification when proprietary tools are required.

Updated August 27, 2026 · Connected workflow · EDOF planning · IOL calculator comparison · AI biometry · ASC inventory
Safe boundary: PrecisionIOL does not recreate proprietary formulas without permission. Proprietary calculators and formula tools are treated as official external verification pathways, while PrecisionIOL focuses on workflow, explanation, risk flags, documentation, and surgeon review.

Why a resource hub matters

Surgeons often search for a task, not a product: IOL calculator comparison, toric IOL planning, post-LASIK calculation, IOL constants, exchange planning, or how to document the final lens choice. A useful planning layer should help route the surgeon to the right task while preserving an evidence trail.

PrecisionIOL should compete on the workflow around those resources: what was checked, why the case is complex, where formulas disagree, how toric assumptions were documented, and how the plan moves from clinic to ASC.

Start with the task

TaskUse PrecisionIOL forExternal verification
IOL formula calculator comparisonDisplay available nonproprietary outputs, formula spread, outlier flags, and a rationale note for surgeon review.Use official proprietary calculators when Barrett, Kane, Hill-RBF, EVO, PEARL-DGS, or other protected formulas are needed.
Toric IOL planning workflowDocument K source, posterior cornea assumption, SIA, planned axis, residual cylinder, and rotation sensitivity.Confirm with surgeon-preferred toric calculators and device outputs when required.
Post-refractive IOL calculationFlag LASIK, PRK, RK, missing historical data, irregular cornea, and formula disagreement risk.Use official ASCRS/APACRS/Barrett True-K style workflows where applicable.
Premium IOL counselingMatch patient goals to monofocal, toric, EDOF, trifocal, and adjustable pathways with patient-ready language.Confirm lens-specific claims against FDA labeling, SSED data, and manufacturer materials.
IOL constant optimizationKeep constants visible as surgeon-specific assumptions and documentation fields.Reference IOLCon, ULIB-style resources, manufacturer values, and local outcome tracking.
IOL exchange or refractive surpriseFrame as a structured review of target, current refraction, implanted IOL, ocular status, and external calculation resources.Use surgeon-preferred exchange/surprise calculators and clinical judgment; do not automate treatment choice.
AI biometry and IOL predictionTrack device source, measurement quality, validation context, multi-ethnic performance concerns, and surgeon verification status.Use research or device-specific AI outputs only within their intended use and validation limits.
Aphakic or secondary IOL planningRoute the case as a high-risk planning workflow with ocular status, fixation strategy, target, assumptions, and documentation prompts.Use surgeon-preferred secondary-IOL resources and validated methods; do not automate treatment choice.
Piggyback IOL planningFrame the residual refractive error, implanted primary IOL, target, sulcus/anatomic considerations, and counseling notes.Use published-method or surgeon-preferred calculators and confirm safety/anatomic fit clinically.
ASC IOL inventory planningTrack planned model, power range, backup lens, delivery system, package notes, and inventory exceptions for the final handoff.Match local inventory systems, payer rules, lens availability, and ASC policy.
OR and ASC handoffCreate a final verification record with eye, IOL model, power, toric axis, target, backup lens, package/delivery notes, and checklist prompts.Match local ASC policy, lens inventory systems, and surgical time-out procedures.

PrecisionIOL workflow pages

Connected Cataract Workflow

A vendor-neutral response to broad ophthalmic workflow platforms: cataract-specific formula transparency, toric planning, premium counseling, OR handoff, and outcomes.

Cataract Surgery Center Workflow

Clinic-to-ASC readiness, missing-information flags, IOL inventory, ordering friction, toric verification, and final handoff documentation.

EDOF IOL Planning

Diffractive vs refractive tradeoffs, halos, contrast expectations, toric needs, mini-monovision, and patient-fit counseling.

AI Biometry and IOL Prediction

SS-OCT, IOLMaster 700 comparison, raw scan review, model validation, multi-ethnic performance, and surgeon-reviewed workflow.

Formula Evidence Hub

Formula-aware planning, disagreement framing, and external calculator boundaries without reproducing proprietary formulas.

Toric IOL Workflow

Posterior cornea, SIA, axis confidence, rotation sensitivity, and documentation.

Post-Refractive Workflow

LASIK, PRK, RK, posterior corneal data status, warning states, and official calculator link-outs.

Premium IOL Decision Support

Patient goals, ocular risk, dysphotopsia tolerance, premium fit, and explainable recommendation rationale.

OR Handoff Checklist

IOL model, power, eye, toric axis, delivery-system notes, backup lens, and final verification prompts.

Device-Agnostic Import

IOLMaster, ARGOS, Lenstar, Pentacam, Cassini, raw scan review, manual entry, and surgeon-controlled verification.

Complex-IOL and inventory resource routing

Exchange, aphakic/secondary IOLs, piggyback IOLs, ASC inventory, and mission inventory planning are specialist workflows. PrecisionIOL should help organize these tasks into a safer clinical record: route to trusted external resources, document the assumptions, and carry a clear plan into the OR.

IOL exchange and refractive surprise

Use PrecisionIOL for documentation of the original target, current refraction, implanted lens, ocular status, and external resource links.

Aphakic and secondary IOL

Treat as specialist planning with fixation strategy, anatomic considerations, target selection, and clinician-authored rationale.

Piggyback IOL

Capture primary IOL details, residual refraction, target, sulcus/anatomic considerations, and patient counseling.

ASC and mission inventory

Connect model, power, backup lens, delivery system, inventory exceptions, and mission/ASC logistics to the final handoff.

External resources to keep in the workflow

How to differentiate from resource directories

Clinical decision-support framing

The safe product language is review, compare, support, explain, and document. PrecisionIOL should not claim autonomous lens selection or independent diagnosis. The surgeon remains responsible for choosing the lens, verifying calculator outputs, and applying clinical judgment.

Move from resources to a documented plan

Use PrecisionIOL to connect calculator outputs, toric assumptions, premium counseling, patient-ready explanation, and OR handoff in one workflow.

Open IOL Planner