QUESTIONS

Can I get a prescription in a full face plate mask?
Can you do ANY prescription?
What is a Diopter?
What is the Optical Center?
The Eye Doctor says I have Astigmatism, can you help?
Can you put bifocals in a dive mask?
Do you do progressives?
Why are bifocals always so high?
What is the Interpupillary Distance, or PD?
I broke a lens, can you help?
Do the lenses come unstuck?
How long until you ship my lenses?
What is the shipping cost?
What about defoggers?
Is that price by the pair?
Sweeten that a little?
Hey I live in San Diego, I'll be right over....
Can I skype or IM you?

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Can I get a prescription in a full face plate mask?
Yes you can. We put any prescription in any dive mask. Single vision, bi-focals or gauge readers.
We custom make every lens to fit your prescription and your mask.
Any dive mask at all?

Any Prescription ?
Yes, we really can put any prescription in any dive mask.
All our work is custom so we can accommodate even the highest prescription.Our record to date is  a - 27 !!
There is a extra charge of $ 30.00 for sphere powers greater than + 4.00 or - 4.00, and cylinder powers + or - 3.

What is a Diopter ?
The diopter is a unit of measurement of strength, or refractive power of lenses.
The higher the diopters, the more curved the lens is.
What is the Optical Center ?
The point at which the sphere and cylinder power of the lens intersects.
We ask you to dot your mask so that we can place the optical center directly over your eye.

The Eye Doctor says I have Astigmatism...
No problem at all. We deal with all astigmatic corrections and even the very difficult ones no one else can handle.
It just means that your eye is slightly "out of round", requiring the addition to the lens of a certain amount of "out of round", called cylinder.
A precise amount, and angle, different for each eye, is specified in the second set of numbers on a prescription.
Although there is NO CHARGE for corrections under 3, there is a $30.00 lab fee for cylinder corrections over + or - 3.

Bifocals? Underwater ??
Are you a photographer, videographer or cinematographer?  Or a dive computer & gauge wearing diver?
Are you over 35 years old?
Our eye muscles gradually lose the ability to focus on close objects after age 35 .....
If your enjoyment of diving would be improved by adding the ability to focus up close again, then consider bifocals or a gauge reader in your dive mask

Do you do progressives?
We believe that divers are not as well served by progressives as the shore bound community.
The narrow mid-range area between distance and near is not optimal for diving while
the flat topped bi-focal offers a larger and more distinct reading area for gauge and camera viewing.

Why are bifocals always so high ?
We can place your bifocal where you want it. Mark your face plate with a felt pen where you think you want it.
Dive a little with the line on there.
Change it if its too high or low. When you're happy, ship it to us.
If you've got no preference we will put it around 10 mm below your pupil center
(where you put those dots before shipping).

This video shows you how to mark your bifocal line.

What is the Interpupillary Distance, or PD ?
The PD is the distance from the center of one pupil to the center of the other. This is different for each person.
It is essential for accurate dispensing to place the optical center of the lens over the center of the pupil.
Any offset can induce prism, actually changing the apparent power of the lens.
We ask you to dot your pupil center before shipping your mask to us.
Do this by wearing the mask, looking into the distance at a point, and marking that point on the face plate with a felt tipped pen.
Another method is to have another person mark the center of your pupils while you look into the distance.

Learn how to dot your pupil centers.

I broke a lens.....
Did the lens break or just the face plate? Thats usually what happens. If so, send us the broken bits, suitably wrapped.
We'll burn the lens off at high temperature, polish it and inspect it for damage.
Usually we can re-use the lenses, and bond them to a new face plate.
If your mask is the full face plate, then you will have to buy a new mask.
A burn and remount of your lense is $45, not guaranteed.

Do the lenses come unstuck?
We were hoping you would ask! The answer is: Never! We boiled them, then froze them. Soaked them in acetone.We left them in the sun for months.
Salt water, fresh water, it made no difference. So we are happy to guarantee them for life.
None have ever come unstuck yet until we want to remove them.

How long until you ship my lenses?
Normal turnaround time is 10 to 15 days.
Super Rush orders available for:
$50 (3 to 5 working days)
$35 (6 to 8 working days)

What about shipping cost?
Shipping is $15.00 inside California.
$15 ground ( 5-7 working days)
$30 for second day delivery
$60.00 next day air
Hawaii: $20 3-4 day priority mail - $35 2 day express mail
International shipping $50.00

What about defoggers?
You can use any de-fogger you like.
The lenses are made of glass, just like the face plates are, and they can withstand any chemicals except abrasives.

Is that price by the pair?
Yes it is. A Left and a Right lens. And to make it even more reasonable, we are giving 50% off to one eyed divers.

Sweeten that a little ??
OK, We will give you 5% off if you mention HOW you found our web site!! Tell us which search engine you used.

Hey I live in San Diego, I'll be right over....
Well come on down!
We are there 9 to 5:00 Monday through Thursday, 9 to 2:30 on Friday.

Can I SKYPE or IM you?
Yes you can chat with us during business hours.
SKYPE: prescription_dive_masks
OR
AIM: rx.divemasks@mail.com

Email us at rx.divemasks@mail.com