Optical Lens Zoom Mask

Description

The negative range here runs a great deal deeper than the positive one, from -1.5 all the way to -8.0 in half-dioptre steps against +1.5 to +4.0 on the plus side, which says plainly which divers this lens was built around. It is a full corrective lens for the Zoom's user-changeable dual lens system, seating in the same frame the stock lens came out of, so a change is a couple of minutes at a kitchen table with no tools involved. Every lens is tempered and supplied singly, and buying one eye at a time is what makes the system work, since a spectacle prescription seldom carries matching sphere values left and right. Should the prescription move later, the answer is another lens and not another mask. Correction is spherical only, leaving astigmatism and any cylinder figure untouched, and an up-to-date prescription is what gets the order right first time. It suits a short-sighted diver who wants to leave spectacles ashore.

Features

• Full corrective lens for the Zoom dual lens system
• Positive +1.5 to +4.0, negative -1.5 to -8.0, in 0.5 steps
• Tempered, supplied singly per eye
• Seats in the original frame; changed at home with no tools
• Two lenses make a full mask
• Spherical correction only; astigmatism not corrected

What's Included

• One optical lens for one eye