Lens Lab
The lens matters as much as the frame
Here is a plain guide to the lens types we fit at Ami Optics in Virar East, what each one is for, and how to tell which is right for you. Try the demo under each lens, then come in and we will check it against your eyes.
Lens 01
Blue cut lenses for long screen hours
If your eyes feel tired and dry after a day on the laptop, a blue cut lens is usually the first thing we suggest.
Phones, monitors and LED lighting all give off blue light through the day. Blue cut lenses carry a filter that reduces how much of it reaches your eyes, which many people find takes the edge off screen fatigue during long work sessions. The filter is built into the lens, so it works with any prescription, and we can add it to a plain power lens too.
We fit blue cut lenses for students, office workers and anyone whose job keeps them in front of a screen. If your main problem is reflections and night driving rather than screen time, anti glare may suit you better, and we will say so.
- You spend four or more hours a day on screens
- Your eyes feel strained by evening
- You read or scroll on your phone late at night
Lens 02
Progressive lenses without the line
One pair that covers distance, screen and reading, with no visible line and no swapping glasses through the day.
A progressive lens blends three focusing zones into a single lens: distance at the top, an intermediate zone in the middle for your computer, and a reading area at the bottom. There is a short adjustment period while your eyes learn where to look, and most people settle in within a week or two.
Getting the fitting right matters more with progressives than with any other lens, so we measure carefully and check the frame sits where it should. If progressives are not the right fit for you, bifocals or a dedicated reading pair are honest alternatives.
- You are over forty and holding your phone further away to read
- You carry a separate reading pair and keep losing it
- You want one pair for the whole day
Lens 03
Photochromic lenses that adjust to the light
Clear glasses indoors that darken on their own in sunlight, then fade back once you are inside.
Photochromic lenses react to ultraviolet light. Step out into the sun and they tint down over about thirty seconds. Come back indoors and they clear over a few minutes. One pair covers the shop, the walk home and the errand in between, without carrying prescription sunglasses as well.
They react more slowly in cold weather, and most types barely activate behind a car windscreen because the glass blocks a lot of UV. If you drive a great deal in daylight, we will talk through whether a separate tinted pair makes more sense.
- You move in and out of sunlight through the day
- You would rather not switch to sunglasses every time you step out
- You want UV protection in your everyday glasses
Lens 04
High index lenses for stronger prescriptions
The same correction in a lens that is noticeably thinner, lighter and easier to wear all day.
A higher index material bends light more efficiently, so it needs less thickness to reach your power. For prescriptions beyond about three dioptres, that is the difference between lenses that bulge past the frame and lenses that sit flat and neat. Lighter lenses also stop your frame sliding down your nose by the afternoon.
High index works well with a slim acetate or metal frame and with an anti glare coating, which cuts the extra surface reflections that thinner lenses can show. We will show you the likely edge thickness before you decide.
- Your prescription is above roughly plus or minus three
- Your current lenses look thick at the edges
- You want a lighter pair for daily wear
Lens 05
Anti glare coating for night driving and bright light
A coating that clears the reflections off your lenses so you see the road, the screen and each other more clearly.
Every lens surface reflects a little light. At night those reflections show up as halos around headlights and streetlamps. On video calls they show up as bright patches hiding your eyes. An anti glare coating cuts the reflections on both faces of the lens, so more light passes through to your eye and less bounces around.
It also makes lenses easier to keep clean, since most anti glare coatings now include a layer that resists smudges and water. We add it to most prescription lenses as standard and can leave it off if you prefer.
- You drive after dark and dislike the glare from oncoming traffic
- You are on video calls and want your eyes visible
- You work under bright office or shop lighting
Lens 06
Polarised lenses for glare off roads and water
Prescription sunglasses that cut the harsh horizontal glare bouncing off tarmac, water and car bonnets.
Polarised lenses carry a filter that blocks light reflecting off flat surfaces. On a bright day the road ahead stops shimmering, water turns from a white sheet into something you can see into, and colours look deeper. It is a real step up from an ordinary tint for anyone who spends time outdoors in strong sun.
We make polarised lenses to your prescription in sunglass frames, with the same care over fit as your regular glasses. One thing to know: polarised filters can make some phone and dashboard screens look dark or patchy at certain angles.
- You drive long distances in daylight
- You spend time near water, sand or snow
- An ordinary tint still leaves you squinting
Let's help you see the world clearly.
Walk in for an eye test, browse the frames, or just say hello on WhatsApp. We'd love to meet you.