Fit intelligence
Contact Lens Fit Intelligence
Refraction + keratometry + corneal measurements + ocular-surface preference → lens parameters, then commercial availability across the product database.
Refraction
Enter the spectacle prescription (vertex conversion is applied per principal meridian) or switch to an already-converted contact lens Rx.
Right eye · OD
Left eye · OS
OD and OS K1 / K2 in dioptres or millimetres.
HVID, visible iris, and optional corneal diameter.
Tear film / ocular surface
A product-filtering preference — not a clinical classification.
Balanced filtering: material, oxygen transmissibility, water content, base curve, diameter, power availability and replacement schedule are weighted together.
Fitting preferences
One-tap filters applied to the database.
Lens type
Wearing schedule
Material
Priorities (multiple allowed — affects ranking only)
Multifocal mode
Switches the workflow to distance Rx + ADD + working distance.
Near demand at 40 cm = 2.50 D
Where a numerical ADD is entered it is always used for matching; the categories above describe the patient profile and never replace the measured ADD.
Database search
Manufacturer, brand, model, BC, diameter, power, ADD, material.
Calculated targets
Stage 1 — mathematics only
OD
No prescription entered
OS
No prescription entered
Clinical warnings
- • Enter at least one eye's prescription to search the database.
- • HVID not entered — diameter compatibility cannot be compared against corneal coverage.
Preferred lens parameters
Base curve and diameter are taken from each manufacturer's published options and fitting guidance. OptiX Pro deliberately applies no universal rule such as “K 43.50 → BC 8.60”, because soft lens base curve selection depends on lens design and manufacturer.
Results
Enter the prescription, keratometry, HVID and preferences, then tap Find matching lenses. OptiX Pro converts the prescription, analyses the cornea, filters the database and reports which commercial parameters are actually available.
Clinical verification required
Important: parameter matching does not establish clinical fit. Contact lens movement, centration, coverage, comfort, tear film, corneal physiology, visual performance, over-refraction and manufacturer fitting guidance must be assessed clinically.
Database quality control
Verify products against manufacturer documentation, add your stock, or import a CSV.
OptiX Pro provides mathematical calculations, reference information, and fitting assistance. It does not replace professional clinical examination, manufacturer fitting guidelines, or professional judgement. Contact lens selection and prescription must be clinically verified.