Karo Sunglasses

Frame Size: 50-18-140 mm
Lens Width: 50 mm
Lens Height: 45 mm
Bridge Width: 18 mm
Temple Length: 140 mm
Frame Width: 142 mm
Frame Height: 49 mm
Weight: *20 g
Frame Material: *TR90 and metal
Flex hinges: No
Gender: *Unisex

Fit: Medium. At 42 mm wide, the frame sits well on medium faces.

Lightweight black sunglasses with a slim metal construction, round panto silhouette, black front, and thin black temples. Dark green-grey sunglass lenses that soften harsh sunlight while keeping the view natural, clear, and comfortable. Designed to be worn outdoors, while driving, travelling, walking, or spending time in bright daylight.

Light and visual comfort

Bright sunlight is not just uncomfortable — it can make your eyes work harder, force you to squint, and leave your vision feeling tense and strained.

That’s why Fovea Blue® sunglasses are designed to filter harsh light waves while allowing beneficial infrared light to pass through. Their soft grey-green lens color is especially comfortable for the eye, helping you see with high contrast, natural color quality, and a calm, beautiful visual experience.

Comfort you can wear outside

During sunny walks, driving, travel, or everyday time outdoors, put on your Fovea Blue® sunglasses and feel your eyes relax — so bright light feels softer, clearer, and easier to enjoy. Fovea Blue® sunglasses help reduce squinting, support visual comfort, and make the outside world feel calmer without dulling the beauty of natural colors.

Harsh light filtration. Fovea Blue® sunglasses are designed to block the intense light waves that make you squint and strain your eyes in bright sunlight, helping outdoor light feel softer and more comfortable.

Infrared light transmission. Unlike sunglasses that simply darken everything, Fovea Blue® lenses allow beneficial infrared light to pass through, supporting a more natural and comfortable visual experience.

Soft grey-green lens colour. The grey-green tint is one of the most pleasant colours for the eye. It helps reduce harshness while keeping the world clear, calm, and visually beautiful.

High contrast vision. The lenses are designed to preserve strong contrast, so your surroundings stay sharp and easy to read - whether you are walking outside, driving, or spending time in bright daylight.

Natural colour quality. Fovea Blue® sunglasses soften harsh light without making the world look flat or distorted. Colours stay rich, balanced, and natural.

Comfortable outdoors. Wear them during sunny walks, travel, driving, holidays, or everyday time outside to reduce squinting and support relaxed, comfortable vision.

100% UV protection. All Fovea Blue® sunglasses protect your eyes from UV light, so you can enjoy brighter environments with greater confidence.

Fovea Blue® Sunglasses lenses come with:

• Internal anti-reflective coating
• Anti-static coating (to reduce dust build-up)
• Anti-fog coating 
• Hydrophobic coating (to repel water)
• Oleophobic coating (to repel oil and fingerprints)
• 100% UV protection
• Lens Cat. 3

1. Choose your Fovea Blue® sunglasses. Select the model that suits you best and place your order in just a few minutes.
2. Put them on when you need protection from light. Wear them in the sun, on walks, while driving, while travelling, or whenever you spend time outdoors.
3. Feel the comfort of clear vision. Reduce squinting, soften harsh light, and enjoy sharp contrast, natural colour quality, and a beautiful visual experience.

Prescription and reading lenses are made to order, with an estimated production time of around 8 weeks. Each lens is tinted individually, so slight differences in lens color may occur.

If you need a migraine filter sooner, and also need correction lenses, we recommend the clip-on from our Migraine Relief collection, that can be used with your current glasses.

We keep stock in Poland and ship fast - within 1–3 business days.

The clip-ons are universal and designed to be worn over your own glasses. By choosing the clip-on, you can get the same double blue and red light blocking without waiting for prescription glasses.

Poland

Orders are shipped within 1–3 business days.

Parcels are dispatched on Mondays, Wednesdays, and Fridays. To have your parcel dispatched on the next shipping day, please place your order by 4:00 PM on the previous day.

Example: if you would like your parcel to be shipped on Monday, please place your order by Sunday at 4:00 PM.

Fovea Blue® orders are shipped from Poland. For shipments outside Poland, the customer may be required to pay additional charges before delivery, such as VAT or customs duties.

European Union

Orders within the European Union are processed within 1–3 business days. After dispatch, the estimated delivery time is usually 2–5 business days.

United Kingdom

Orders to the United Kingdom are processed within 1–3 business days. After dispatch, the estimated delivery time is usually 4–9 business days. 

We offer a 30-day satisfaction guarantee. If the product does not meet your expectations, you have 30 days from receiving your order to request a return.

To start the return process, please contact us at help@foveablue.com, providing your order number and a short reason for the return. Our team will send you further instructions.

Personalized and custom-made products are non-returnable. This applies in particular to prescription glasses.

Read our full return policy here.

All our products come with a 24-month warranty against manufacturing defects in the frames and coatings, plus a 30-day satisfaction guarantee, or your money back.

How to Care for Your Lenses

• With regular wear, dust, oils, and everyday marks may build up on the lenses. To keep them clear and help prevent scratches, rinse the lenses with cool water before wiping them.
• Use only a clean microfiber cloth. If the cloth is dirty, wash it first and allow it to dry completely.
• After rinsing, gently dry the lenses with a clean microfiber cloth, without applying strong pressure or rubbing aggressively.
• Store your glasses in their case in a cool, dry place, away from high temperatures and direct sunlight.

Do Not Use

The following products and materials may damage the lenses or their surface. Do not use:

• alcohol,
• harsh chemicals,
• detergents, laundry powder, or strong dishwashing liquid,
• paper towels not intended for optical lenses,
• wipes not intended for optical lenses,
• dirty or rough fabrics.

What to Use

For safe cleaning, we recommend:

• a clean Fovea Blue® microfiber cloth,
• cool water,
• if needed, one drop of mild dish soap diluted in water.

After washing, rinse the lenses thoroughly with cool water and gently dry them with a clean microfiber cloth.

• Fovea Blue® glasses containing your chosen Fovea Blue® lenses
• Fovea Blue® original leather case
• Fovea Blue® microfiber cleaning cloth