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Troubleshooting & Best Practices
Frame Compatibility
Use this guide before ordering lenses in frames with unusual shape, high wrap, drill mounts, safety requirements, or edge-thickness risk.
Symptoms
- Lens will not seat cleanly, pops out, chips at the edge, or shows excessive stress.
- Patient receives a lens that is cosmetically thicker or heavier than expected.
- Safety or wrap frame does not perform as expected after glazing.
- Drill-mount, nylon, or grooved frame has cracking, starbursts, or unstable retention.
Common Causes
- Frame shape, groove depth, bevel placement, or eyewire tension is not compatible with the prescription and material.
- High wrap requires compensated measurements and design/material choices appropriate for wrap.
- Drill mount or nylon mounting concentrates stress in lenses that are too thin, brittle, or poorly suited to the frame.
- Safety frames may require approved lenses, markings, thickness rules, or program-specific frame choices.
- Large eye size or poor frame selection increases edge thickness and cosmetic concerns.
Recommended Actions
- Check frame condition, groove depth, eyewire closure, screw integrity, and whether the frame has been previously stretched.
- Confirm material choice against Rx, mounting style, safety requirements, and frame shape.
- Review minimum thickness, edge polish, groove, drill, and wrap requirements before ordering.
- For high Rx jobs, discuss frame-size changes before quoting or promising cosmetic outcomes.
- For safety jobs, confirm the frame and lens path meet the required program before placing the order.
When to Contact the Lab
- Contact the lab before ordering if the frame is high wrap, drill mount, rimless, vintage, damaged, safety-specific, or unusually large for the prescription.
- Send frame brand/model, A/B/DBL, material requested, Rx, intended use, and photos when compatibility is uncertain.
- Ask the lab to review thickness, mounting risk, and safety requirements before promising the job.
Best Practices
- Use frame selection as the first lens-performance decision, not an afterthought.
- Avoid promising thin edges in oversized frames with high minus prescriptions.
- For drill mounts, choose materials and thicknesses that reduce cracking and stress.
- Document patient approval when a frame choice carries known cosmetic or mounting limitations.
