A quick note for anyone considering purchasing any of the items Frederic has for sale: Do not hesitate in the slightest! You will find him completely organized, and your transaction will be entirely friendly and professional! Highly recommended
One more vote for prescriptiondivemasks.com! I have a reasonably strong prescription, and was skeptical about how good it would be when put into a dive mask. Well surprise surprise when my new mask arrived.. I was/am amazed! Fantastic clear vision! Maybe even better than my regular glasses. Definitely worth the investment imo.