Category: Eye Care

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Glasses for Large Heads

Sea2See Nimmo Tortoiseshell

Glasses for large heads can be more limited in range compared to the more common head sizes. However, you don’t need to feel like there is nothing out there for you and neither do you always need glasses custom made for your face. Here at in Northolt, North West London we stock large/oversized eye glasses suited to those o the large end of the spectrum.

What size glasses should I get if I have a big head?

Larger sized glasses need to have a eye size of 54 and above to sit comfortably on your head. This is an approximate figure as your face shape includes variations in nose width and eye to ear length. This means that you aught to be properly measured up to determine the best fitting glasses frame for you. The last thing you will enjoy is a pair of glasses that sit with the right width on your face but keep slipping down because the side length is not long enough for your head size. It is important for a frame expert to make sure the side length is good for you and the end s can be adjusted. Not all end can be adjusted easily as it depends n the material used to make them.

Book appointment
https://oldfieldsopticians.com/book-appointment/

Who makes glasses for big heads?

There are various designs available in the sizes you may need. There are even sustainable eyewear choices available. Designs from Sea2See, Green Eyewear and Dunlop include oversized frame designs for large heads. We also stock rimless frames made from titanium that fit large heads. Rimless eyewear is unique in that we can alter the lens size and make it more bespoke to your head size.

Sea2See Nimmo Blue

This frame from Sea2See comes in size 57×15 with a side length of 140, making it a good choice if you have a large head.

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Be More Sustainable With Your Eyewear With Eco

Eco Eyewear

All Eco eyewear come with a clip-on sun lens. A sustainable 2 in 1 option. Convert your glasses into sunglasses instantly. Strong magnets hold securely. Excellent when driving.

Biobased frames made from castor seed oil. Very light with premium sun clip-on giving you full UV protection with polarised lenses.

Eco Gila Frame

A sustainable 2 in 1 option. Convert your glasses into sunglasses instantly. Strong magnets hold securely. Excellent when driving.

Sustainable frames made from biobased castor seed oil, 95% recycled metals, and ocean based plastics. All with magnetic sun clip-ons.

Eco works with trees for the future to plant a tree for every frame purchased. With your help, they have planted over 2 million so far – and that number just keeps growing.

Your ECO eyewear come with:

  • Eco Frame
  • Standard 1.5 lenses
  • Scratch resistance coating
  • Sunglass Clip-on with polarised lenses
  • Frame case made from recycled PET
  • Lens cloth made from recycled plastic bottles
  • A tree planted
  • A smile
  • All for only £179.95
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Save the Seas with Sustainable Eyewear from the Oceans

Ocean recycled eyewear

The eyewear industry has used all sorts of materials when making spectacles. Metals in the form of Titanium, Nickel, Stainless steel. Plastics in the form of acetates, TR90, Nylon, Acrylics.  Natural materials made with wood, animal horns, and shells. There was a time when sea turtles were harms to obtain their turtleshell and this was stopped around the advent of acetate as an alternative. This is where the classic colour of tortoise shell came from. The acetates turned out to be a very durable material, coming in a wide array of shades and colours Fast forward to today and these plastics now pose a problem to marine life and our own health by extension.

Plastics in the oceans

  • There is so much plastic in the oceans that 88% of the ocean is polluted by plastics.
  • Almost all baby sea turtles have plastice waste in them ,
  • There are 5000 pieces of plastic & 150 plastic bottles for each mile of UK beach,
  • the UK contributing to 1.7 millions tonnes of plastice waste annually.
  • Has affected our food chain with 1 in 3 fish for consumption contain plastics.

That’s a lot to digest and the situation seems over whelming but there is a push to clean up the oceans and upcycle the waste. Companies like Sea2sea have collection points in various countries ,providing an extra income to locals and allowing them to gather and process tonnes of ocean plastic like fish nets. These are then turned into glasses frames.

What we like about Sea2Sea eyewear.

Ocean recycled eyewear

Despite the recycled nature of the eyewear, they are light weight, and the colours are bold. The sizing range means we have frames for very large face shapes to petites.

If you would like to come and try them on please email us or request an appointment.

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Melanin lenses in London

Handmade Designer Glasses

Melanin lenses in London. What is melanin and why is it so good at protecting us against the harmful effects of UV radiation?

Melanin is best known as a skin pigment. It gives us different skin complexions depending on the amount of melanin we have. The less melanin we have the paler the complexion and the more we have the darker the complexion.

However, melanin is also made by our bodies in response to UV light. This is known as the familiar tan so many of us crave.

Melanin is found in the eyes and helps protect against the damaging effects of UV radiation. It also helps reduce the effect of glare from stray light in the eyes. 90% of the light that enters the eyes is absorbed by the melanin, allowing us to have better vision.

With age the melanin levels in our eyes fall causing a greater risk to UV damage and also to glare. Some people may also have abnormally low levels of eye melanin that causes poor vision.

Melanin lenses as sunglasses give 100% UV protection and also filter 98% of blue light. They do a better job at UV protection than standard tinted lenses. Why is this? Standard tinted lenses do not protect against HEV which is on the blue end of the spectrum.

Different types of UV light

  1. UVA = wavelengths 320-400 nm. Slightly blocked by the Earth’s ozone layer.
  2. UVB = wavelengths 280-320 nm. Strongly blocked by the Earth’s ozone layer.
  3. UVC = wavelengths  100-280 nm. Very Strongly blocked by the Earth’s ozone layer.
  4. HEV (high energy visible) = 400-500nm. Not blocked by the Earth’s ozone layer.

Melanin lenses and macular degeneration

Macular degeneration is a degenerative condition that affects the aging population and is linked to among other things light damage from free-radicals which are no longer absorbed by naturally occurring antioxidants found in the eye. These antioxidants (Lutein and Zeaxanthin) fall in concentration as we age. Melanin acts as an antioxidant protecting the eyes from harmful free radicals.

Sunglasses with melanin tints give the best protection against free-radicals being produced by the UV and HEV spectrum.

Melanin lenses in London

TAVAT sunglasses are one of the few manufacturers of high quality melanin sunglasses and ophthalmic/prescription glasses with melanin clip-ons.

Oldfields Opticians in North West London stocks TAVAT ophthalmics and sunglasses with the option of clip-on or full sunglasses. Contact us for more information.