prescription swimming goggles

IST Corona M55

  • IST Corona M55
  • IST Corona M55
  • IST Corona M55
  • IST Corona M55

Usually despatched within 24 Hours

IST Corona M55

Superior fitting and comfort

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The Corona M55 has been one of the most popular IST diving masks (this version with prescription lenses) and its superior fitting and comfort are the reasons behind the success. Its swivel buckle allows the diver to adjust the mask to the most desirable position. The low internal volume gives unrestricted view.

  • to correct long and short sight
  • available with bifocal lenses
  • comes in 3 different colours
  • same or different powers in each eye
  • pre-assembled
  • hard plastic case

At Butterflies Healthcare, we try to make sure our customers are always 100% happy, not only with the products they buy but also the service we provide. However, buying online can seem more difficult for certain products. We want to reassure you that we offer you an easy and trustworthy online service. As we are owned by a qualified optometrist, we really understand your visual needs.

Our customer service team are always happy to offer advice and guidance for product selection or any enquiry you may have. We can offer expert advice on the best prescription goggles for your needs and are able to supply prescription goggles to suit most people.

You have the right to cancel the contract at any time up to the end of 14 days after the day on which you receive the goods (30 days in the case of faulty/damaged goods). To exercise your right of cancellation, you must give written notice to us by post or e-mail giving details of the goods ordered and (where appropriate) their delivery. You can use this model instruction to cancel email template if you wish.

Off the shelf goggles

If you purchase any ‘off the shelf’ goggle from us, so long as it has not been used in the water you can return in the original packaging for a full refund or exchange.

Custom made goggles

Custom made products, such as the Swimvision II, can only be returned if there is a fault with the goggles. For this reason we offer a trial fitting service where we can send you an empty goggle to try on first to ensure the fit is suitable. Please contact us for more details.

Should you find any fault with your goods then simply return them to us explaining the problem. We will then either rectify the matter or offer a full refund. Please bear in mind the following:

  • When you receive items you have ordered, we recognise that you may want to try them on to ensure the fit and feel is as you envisaged. In the case of swimming goggles do this before using in the pool, for swimwear wear underwear underneath.
  • Please remember, we can only issue you with a refund or exchange if the returned product concerned is in a fully re-saleable condition. This means that they must be unused and in the original packaging.
  • Return postage and packing costs will be met by the customer (except for faulty/damaged items) but no postage and packing charges will be added for exchanged items.

Your rights to return goods are protected under the EU Distance Selling Directive which can be found at

All orders are delivered from the UK


  • £3.00 2nd class (4-5 working days)
  • £4.00 1st class (1-2 working days)
  • £8.00 Special Delivery or APC overnight* (next working day)


  • £5.00 (Ireland, France & Germany) by Royal Mail Max Sort (no tracking)
  • £10.00 by Royal Mail Tracked and/or Signed (depending upon location)

Rest of the World

  • £9.00 (Australia & New Zealand) by Royal Mail Tracked and/or Signed (depending upon location)
  • £13.00 (Canada & USA) by Royal Mail Tracked and Signed
  • £15.00 by Royal Mail Tracked and/or Signed (depending upon location)

PLEASE NOTE: orders shipped outside of the EU are processed excluding UK taxes but import duties and/or taxes may be applicable in your delivery country for which YOU ARE LIABLE.

General Information

Your order will be sent to the delivery address according to this schedule:

  • For goods that are held 'in-stock', we aim to despatch orders placed before 1pm Monday to Friday the same day (excluding bank holidays). Orders placed after 1pm will leave on the next working day (so on Friday this will normally mean Monday)
  • Items we have to order in are usually despatched within a week
  • Custom made goggles and masks are usually despatched within 2-3 weeks If you need your order urgently or by a specific date please contact us to ensure we can meet your delivery requirements.

* Special Delivery/APC Overnight does not cover Saturday delivery. Therefore, orders placed after 1pm Thursday and before 1pm Friday will be despatched on Friday and delivered on Monday. Also Special Delivery/APC Overnight do not offer next day delivery to Northern Ireland, certain parts of the Scottish Highlands and offshore islands (e.g. Channel Islands).

We DO NOT deliver to shipping houses such as Aramex House.

International orders will be despatched in accordance with the above schedule but can take up to 28 days to arrive.

Feefo Reviews
Got -2 prescription and it’s fantastic can see everything can’t wait to use on my holiday!
Feefo Reviews
had not been put together properly and leaked badly. However, I could take them apart and put them back together again and then they worked fine and did not leak. easy thing to double check before shipping but I'd probably still recommend them
Our ResponseSorry to hear that the lens was not fitted correctly.

We do aim to test all masks before they leave us, this one must have slipped through.

I will speak with the packaging team to try an ensure this does not happen again.

Feefo Reviews
My dad really liked the style and fit of the mask
Feefo Reviews
Excellent product, communication, service and swift delivery.
Feefo Reviews
I havent used them in the water yet but they work well out of the water, same as my glasses.
Feefo Reviews
Super, I can now see things when snorkelling! Product completely matches expectation.
Feefo Reviews
It's not anti-fog!
Our ResponseProduct :Sorry they were not as you excepted. None of the diving masks carry an anti-fog treatment, that is something usually only on swimming goggles.

Feefo Reviews
Sturdy biofocal lenses, well produced, excellent for viewing gauges and camera controls underwater.
Feefo Reviews
Nice goggles but let’s in a little water
Feefo Reviews
Used the prescription mask on three dives. Everything lovely and clear, without any significant water leakage (once I got tightened them a bit).
Feefo Reviews
great product, as described
Feefo Reviews
Excellent speedy service
Feefo Reviews
I have become your biggest advocates, raving to everyone about how good I have found the snorkel mask. I saw more fish and coral than I ever have and now wonder if I’ve just missed them previously because of my lack of a good mask. I can’t wait to get back in the water. Thank you.
Feefo Reviews
Perfect vision dive mask. Highly recommend
Feefo Reviews
They are really good, don’t fog. The yellow is great for visibility. The vision in the water is nice and clear.
Feefo Reviews
I haven't tried swimming with them yet but the lenses work very well and the masks have a very strong seal around my face. Very pleased with the purchase but I'll warn other Canadians to be prepared to pay duty! I ordered two masks and had to pay another $38 just for the duty.
Feefo Reviews
Looks fine, but haven't used it yet
Feefo Reviews
brilliant googles fit my face with out leaks and look great
Feefo Reviews
A great mask. Could only be improved by jellyfish repellent!
Feefo Reviews
they look good but i havent used them yet,so will let you know how i get on later
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Contact Us

0330 660 0796 Open 9am to 5pm, Monday-Friday ?subject=Prescription Swimming Goggles - United Kingdom">Click here to email us
Butterflies Healthcare
The Granary
Manor Park
OX17 2AG
United Kingdom
Feefo Gold Trusted Service