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The Nation’s Largest Consumer Scuba Expo to be held on May 4-5 Divers from across the nation are invited to celebrate the spirit of adventure at the diving event of the year, as the Scuba Show returns to Long Beach with more scuba exhibitors, experts and seminars than ever. For three decades, this expo hasContinue reading “Come see us at the 32nd Annual Scuba Show!”
The weather is getting warmer and as summer approaches the 2018 Scuba Show extends an invitation to all adventurous spirits to discover a world beneath the aquatic surface at the Long Beach Convention Center on Saturday and Sunday, June 23rd and 24th.
Whether your dive mask is a brand new mask or an old favorite with new prescription lenses; there are a few things you can do to ensure that it lasts as long as your love of diving.
There are three ways of adding your prescription to your mask, drop in diopters, plastic retainers and bonding. Most dive shops and online stores offer drop-in diopters because they are easier and cheaper to fabricate, andlazka some people go for them because of the price point. However, drop-ins are only your “close to” prescription. NoContinue reading “Drop ins vs. Inserts vs. Bonding: Not All Prescriptions Are Created Equally”
These past months have been very exciting for us at Prescription Dive Masks. We have a new, improved and bigger location and we couldn’t be more happy about it. In our new office we do everything from receiving your orders, to work on them and get them ready to ship to your location. All theContinue reading “Take a Tour Around Our New Office & Meet Our Team!”
The PD (Pupil Distance) is a required measurement needed to fill your glasses prescription. Note: If you’ll leave the PD measurement blank, one of our opticians will reach out to you to for further assistance.
What is the PD?
The PD is the distance between your pupils, using millimeters as the unit of measure. The average ranges between 54-74. Some doctors may write it on the prescription. You can ask your eye doctor or local optician to measure it for you. They use a device that instantly gives them the PD.
If Your PD is two Numbers:
If the numbers are two higher digits like 62/58, then the first number is your Distance (Far) PD used for making distance glasses and the second is your Near PD used for making reading glasses. If the numbers are two lower digits like 29.5/32.5, then just add them together for the Distance P.D.
If Your PD is one Low Digit Number:
If the number is one low digit, like 33; just add them together for your Distance PD.
Option 1: You will need a friend and a ruler. With a friend sitting opposite you at the same height, ask them to place the ruler across the bridge of your nose, with the millimeters side facing upwards. Your friend should move the ruler, so that the zero value is in the center of your right pupil. Your friend should now read off the measurement to the center of your left pupil. Bingo! That’s your PD.
Option 2: You will need your glasses, a friend, a ruler, and a non-permanent marker. Put your glasses on so they are comfortable and steady. Ask your friend to stand opposite you and have her mark a dot on each of your lenses, exactly where the pupils are positioned. Take off your glasses, and with a ruler, measure the distance between the two dots. That’s your PD! Don’t forget to thank your friend.
Option 3: Do it yourself! You’ll need a webcam, credit card (We use a credit card because a credit card is a universal size and that helps us to configure the proportion of the image).
