The right glasses start with an accurate eye exam, lenses matched to your needs, and frames that fit your face. Kinh Mat Dien Bien Phu helps you move step by step.
The right glasses start with an accurate eye exam, lenses matched to your needs, and frames that fit your face. Kinh Mat Dien Bien Phu helps you move step by step.
Functional lenses
Powered lenses with a fixed tint — glare control, sharp vision, great for driving and outdoor life. Unlike photochromics, the shade stays as designed.
Stable density — not UV-dependent like photochromics.
Tinted after surfacing — works with SV, progressive, and astigmatism designs.
Grey, brown, green, gradients… for driving, sport, or style.
These are corrective lenses with a stable dyed tint — like prescription sunglasses, but hue and density are chosen for your needs. Ideal for daytime driving, outdoor work, or personal style instead of UV-triggered darkening.
Read more: Prescription tint — when to choose it
Prescription tint
Controlled dye bath; gradients, dual tones, or densities per your order.
Light-adaptive lenses
Material changes under UV — clear indoors, darker outside. A different choice; not a full substitute when you need always-on tint.
| Criterion | Prescription tint | Photochromic |
|---|---|---|
| Tint behavior | Fixed color with stable density in normal light. | Clear indoors; darkens in sun / UV. |
| Best for | Daytime driving, outdoor sport, fashion tint. | One pair for indoor and outdoor transitions. |
Lenses are tinted after power surfacing in a temperature-controlled line. Dwell time and chemistry set color and density; each pair is checked for left–right match.
Dyes are weighed to formula and dissolved in a temperature-controlled tank.
Semi-finished lenses soak for a set time to reach target color and density.
Gradients, dual tones, or custom fades when designed.
Rinsed, hard-coated if needed, and checked under daylight before handoff.
If sun glare bothers you but you want one Rx pair, fixed tint is worth discussing — we’ll advise density for traffic rules and your habits.
Pick color and coatings when you order or visit.
Bring your Rx or reach out first — we’ll suggest hues for your frame, job, and driving habits.
