Swans FO2 Prescription Swimming Goggles - Black

Swans FO2 Prescription Lens Swimming Goggles

The Swans FO2 prescription swimming goggles come equipped with specially manufactured optical lenses. They are available in a variety of strengths using the same dioptre scale used for prescription glasses.

Performance

The goggles have a low profile to reduce drag and interchangeable nose pieces and easy-adjust straps. They are suitable for training and competition. The goggles come with two lenses of the same power and they are pre-assembled and ready to use. 

Selecting the Correct Lens Type

You will need to have your eyes tested first by a professional optician, use your prescription for standard spectacles and use the formula below;

Your prescription should look similar to this:

You need to use the number for Sph (sphere) and Cyl (cylinder) values for each eye.

Use the following formula to calculate the dioptre required: Dioptre = Sph + (Cyl / 2)

Using the prescription example above:
Right eye = -2.0 + (-1.0 / 2) = -2.5
Left eye = -2.5 + (-2.0 / 2) = -3.5

If your dioptre falls between two of the options on offer, please move down to the next available dioptre. For example, if your prescription is -3.75 then move down to -3.5.

Does it matter if I have an astigmatism?

No. The above calculation will allow for your astigmatism. If your astigmatism is over 2.00 (as indicated by the cylinder value) - you may need to consider a custom made product.

Specifications    

• Suitable for age 16 years+
• UV protection lenses
• Anti-fog lenses
• Latex free
• Lens colour Grey tinted
• Approximate lens length 61mm
• Approximate lens height 41mm
• Approximate lens depth 12mm
• Approximate unstretched strap length 546mm
• Approximate optical centres (with mid-sized nose bridge) 67mm
• Approximate weight 45g