Curing Tunnel Vision Makes Diving Safer and More Fun
	Traditional flat dive masks trick your brain with a powerful optical illusion. Underwater refraction makes you believe that your field-of-view is much greater than it really is. Physiological feedback confirms that your eyes scan far left, right, up, and down. But if you reach out your arms to match your eyeballs' pointing angle...  you cannot see your arms! Only when your arms arc inward, closer to the axis where your nose points, can you see your arms. We do not Protect what we do not LOVE We do not Love what we do not KNOW We do not Know what we cannot SEE
When you cannot see in, the diver cannot see out This diver could not see the photographer take the picture because of "Total Internal Reflection"
Looking through a Double-Dome mask does NOT feel special
Natural panoramic vision is something we have learned to expect from the day we were born. So when divers experience Double-Dome vision -- with no immediate baseline comparison -- they are not impressed.	But when divers do an A-to-B comparison (Flat vs. Double-Dome) with their body in a fixed position, looking at fixed reference points, even divers with decades of experience are surprised to realize that over 75% of their natural view is blocked.