Wave Prescription Myopia Snorkeling Face Mask Blue Optional Glasses Degree

Model Number: M-1395
Item: Prescription Nearsighted Scuba Diving Mask
Mask lens: Tempered glass
Mask skirt: Silicone / PVC
Mask head strap: Silicone / PVC
Buckle: Auto-clip buckle system
Usage: Snorkeling
Age: Adult
Size: about 16*11cm
Users: free diving, scuba diving, snorkeling, swimming

Features:
Won the design patent of diving goggles
High-definition polycarbonate lenses, good news for people with myopia;
Professional ergonomic design, widened silicone, comfortable fit, strong adsorption, strictly prevent water leakage, suitable for various face shapes.

Optical lenses available from –1.5 to –6.0 by increments of 0.5 (for nearsighted or myopia)

Package Included:
1 x diving mask

[degree selection]
No astigmatism
If your eyes do not have astigmatism, choose lenses according to your degree.

Example: Myopia is -5.0 degree,choose -5.0(-500) degree lenses.If myopia is -4.7 degree,choose -4.5(-450) degree lenses(There are no lenses with the same degree of myopia as you. Choose lenses with a lower degree of myopia than you.).

Has astigmatism

If the astigmatism of the eyes is high, please choose lenses that are -0.1 to -0.5 less than your myopia.
Because the refractive index of water is different, it is necessary to subtract 0.5(50) degrees to avoid excessive height, which will make people easily dizzy.

Example: Astigmatism is 1.0(100) degrees, myopia is 5.0(500) degrees, then 500-50=450 degrees, Then you can choose -4.5(-450) degree or -5.0(-500) degree lenses.