THE HOME OF
New multifocal concept
NATURAL ACCOMMODATION LENS
NAL
®
Following extensive scientific research and empirical studies of eye-lens ergonomics, current frame shapes, fitting statistical data, and patient visual habits NAL® Concept was born. It is not a no-line trifocal like progressive lenses. NAL® is a true multifocal lens that provides correction from infinity to near reading in one continuous individually adjusted power curve. Natural Accommodation Lens is a life changing experience for multifocal wearers worldwide.
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NAL® provides a unique opportunity for independent labs and ECPs to offer their patients the most advanced and comfortable multifocal solution. Client and patient retention, competitive advantage and economic rewards are just some of additional professional benefits.
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QLDS’ NAL® is a commercially viable digital multifocal lens available for implementation to all freeform technology capable optical labs globally.
Multifocal Lens Concepts
COMPARISON
NAL CONCEPT
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No adaptation period —
Immediate, comfortable, natural vision from day one.​
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No peripheral swim effect -
No nausea or dizziness from peripheral distortion.​ Delivers seamless clarity across the entire lens, creating a single‑vision feel
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Effortless navigation —
Wide visual field due to funnel shape enables smooth, seamless transitions between all distances feels natural.​​​​​
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​Forgiving placement
No Fitting height required —
Wide, funnel‑shaped visual field delivers immediate, comfortable, natural vision without precise height placement. Vertical placement can be determined by Ai.
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Speeds Dispensary
turnaround —
Faster fittings, fewer remakes and increased customer satisfaction.​​
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No Eye fatigue -
Mimicking the eye's natural accommodation, NAL reduces eye strain from the modern population's visual habits.​​
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Competitive advantage —
Utility patent (2021), first new multifocal concept since PAL (1959), delivering a truly unique, market‑exclusive lens created with the wearers visual experience in mind.
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Modern Lens Concept —
Designed for today’s indoor lifestyles (modern pupolation spends 80% of time indoors), NAL provides seamless vision at all distances rather than limiting wearers to three fixed zones.
PAL CONCEPT
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Lengthy adaptation —
Slow, frustrating adjustment period that deters wearers.
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Peripheral swim effect -
Clear vision confined to narrow zones; peripheral blur and swim create an unwelcome viewing experience.
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Cumbersome navigation — Hourglass-shaped design creates a narrow intermediate channel that makes visual transitions awkward.​​​​​​​
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Unforgiving placement
Exact fitting height required—
Fitting Height must be exact leaving small margin for error caused by the narrow hourglass intermediate channel which can cause visual discomfort.
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Slows Dispensary
workflow —
Longer fittings, higher remake rates, and lower customer satisfaction.
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Eye fatigue —
PALs can force extraocular and focusing muscles to overwork while searching for a narrow "sweet spot.​
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No competitive advantage — Hundreds of different PAL designs since 1959, success driven by marketing and gimmicks rather than gains in wearer visual comfort.
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Outdated Lens Concept —
Patented in 1959 to create a no‑line, no image jump trifocal, PALs remain constrained by that original concept: hundreds of variations yet limited performance and dated visual philosophy.
20/20 Continuing Education Course:
Break Traditional PAL Rules with a Natural Accommodation Dream Lens
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Learning Objectives:
Upon completion of this program, the participant should be able to:
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Explain the limitations of traditional progressive addition lenses
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Describe the Natural Accommodation Lens (NAL®) concept and its benefits
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Explain the brick-and-mortar and e-commerce opportunity with a multi-focal lens that doesn't need a fitting height measurement.
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We have made this course free for you.