Guides
Everything to know before you buy prescription swim gear.
Plain-language guides on diopters, astigmatism, and the real difference between off-the-shelf and custom-ground lenses.
Buying guide
Best prescription swim goggles: how to actually choose
How to read your Rx, pick the right diopter, handle astigmatism, and when custom-ground beats off-the-shelf.
Read the guide
Comparison
Speedo prescription goggles: how they work, and the custom alternative
Where the most popular optical swim goggle falls short, and when a custom-ground lens is worth it.
Read the guide
Buying guide
Prescription dive masks vs snorkel masks: which do you need?
The real difference between the two, and how astigmatism and gauge-reading change the answer.
Read the guide
Buying guide
Nearsighted, farsighted or astigmatism? Goggles by vision type
Your vision type — not just your prescription strength — decides which goggles will actually work.
Read the guide