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We have been told by our suppliers that we sell more corrective lens dive mask than the whole of the rest of the Australian dive industry combined. It's because of the detailed information on this web page, plus our excellent customer service and everyday low prices. Please read the following information carefully. Then join the thousands of divers and snorkellers who are seeing clearly underwater using a corrective lens mask from The Scuba Doctor.
Prescription vs Corrective Lens Masks
If you wear prescription glasses, diving and snorkelling masks fitted with lenses with your exact prescription can be obtained. But it's very expensive and time-consuming. Most divers and snorkellers don't require this expensive solution and their needs can be solved with less expensive and quick to obtain corrective lens mask solutions. The important thing here is to make sure that the variety of your needs are taken into consideration and the right solution is chosen.
Negative Correction Lens — If you are a snorkeller you probably just need to see objects in the distance, therefore a distance only correction lens can be used with selected masks. That's the case for many divers as well. The solution is what we call a negative corrective lens mask — a negative correction to the whole lens, for short/near-sighted people with myopia.
Positive Correction Lens — For some scuba divers and snorkelers it's the reverse and and they need positive correction lenses for near vision issues. The solution is what we call a positive corrective lens mask — a positive correction to the whole lens, for long/far-sighted people with hypermetropia.
Bifocal Correction Lens — Some scuba divers just need a bit of help reading their gauges, dive computers, or camera controls. The solution is what we call a 'bifocal', or 'gauge reading', corrective lens mask — clear or planar on top and a lower pane with positive correction for reading.
Sometimes snorkellers and scuba divers have eye shapes that require lens shapes not available with corrective lenses. They need an exact, full prescription lens mask solution, and we can't provide it.
Also, some divers may need both distance correction to see the underwater life, and near correction to read gauges and dive computers. Therefore, depending on your prescription, true bifocal, or truncated, full prescription lenses may be required — distance correction on top and a lower pane with positive correction for reading. This is what we call a full bifocal prescription lens mask solution, and we can't provide it.
Your optometrist is the best person to advise you as to which of the above solutions are right for you. Please show them this web page so that they can understand what we can and can't do. Then they can give you the right and left eye correction values we need to provide your underwater vision solution.
Diving/Snorkelling Mask Corrective Lenses
The Scuba Doctor is able to provide the dive and snorkelling masks listed here already fitted with pre-made corrective lenses that correct close to your prescription, not exact. This is a good solution for most scuba divers and snorkellers with low astigmatism.
Corrective lens mask: the mask, plus two separate correction lenses.
Supplied with the corrective lenses fitted, plus the original normal lenses.
We can offer dive masks in a range of correction strengths to suit most people. We offer positive and negative corrections and bifocals. Bifocals are great for people who are long sighted and just struggle to view their gauges. The lenses we supply are not the stick on type, they are complete replacements for the current lenses. We can therefore only supply these on a select few masks.
Some of the masks with optional vision correcting lenses can be obtained with either a '-' (minus/negative) dioptre (e.g. -1.5 to -9.0), or a '+' (plus/positive) dioptre (e.g. +1.0 to +4.5), typically in 0.5 increments.
Some divers require negative distance vision correction, that is, the diver has 'near-sightedness' and the Rx Sphere value is a '-' dioptre.
Other divers require a positive correction, that is, the diver has 'far-sightedness' and the Rx Sphere value is a '+' dioptre.
To order, you can consult your eyeglass, or contact, prescription for the proper amount of spherical power correction. A spectacle prescription is usually written in the following form:
sphere | cylinder | axis | |||
OD / R | -3.00 | / | -0.50 | x | 180 |
OS / L | -3.50 | / | -1.00 | x | 180 |
In order to calculate the power you need to take into account the two aspects of your prescription.
- The sphere (or sph) is the main part of your prescription and will be '–' for short-sightedness (myopia) and '+' for long-sightedness (hypermetropia).
- The cylinder (or cyl) is the secondary part of your prescription and refers to the amount of astigmatism you have.
We need the dioptre (diopter) value for each eye. When reading your prescription, 'OS' means your left eye, and 'OD' means your right eye.
You could base the power you order primarily on the amount of short or long-sightedness you have. If you also have a moderate degree of astigmatism (up to 2.00), you could also incorporate up to half of this to choose the most appropriate power. If the result is a quarter dioptre prescription, then you should typically increase to the next higher/stronger dioptre. For example, if the Rx is -1.75, then increase to -2.0 dioptre. If the Rx is +1.75, then increase to +2.0 dioptre. If one eye needs no correction, then order a 'Normal' or 'Plano' lens for that side.
If this all sounds very complicated, it's because it is! You will find websites that let you enter your script values to calculate the two values we need. We know the formula they use, but our optometrist friends tell us using this method would often lead to disappointed customers. It's just not that simple.
The decision about the values you need is best done by your optometrist as they know best what's going on with your eyes, and sometimes those other values in your script come into play.
Once you know the dioptre values you need, you can then select a mask for which the range or dioptre values available matches your requirements.
Bifocal or 'Gauge Reader' Corrective Lenses
Finding the numerals on your gauge too small, especially in the dark? Finding your arm is not long enough, but have pretty good distance vision? If you answered yes to these questions, then you probably have presbyopia, a condition where the eye exhibits a progressively diminished ability to focus on near objects with age. On the surface, the fix is reading glasses (those things you always forget just when you need them most). Bright light also helps, as it constricts the pupils, and decreases spherical aberration. Some people use prescription bifocals, trifocals or multi-focal lenses.
Underwater the solution is a 'Gauge Reader' mask fitted with what the dive industry refers to as Bifocal corrective lenses. These underwater bifocal corrective lenses for masks aren't quite what people are used to with bifocal prescription glasses.
With Gauge Reader dive mask bifocal corrective lenses, the lower pane (roughly a third) has the plus dioptre reading correction, and the rest of the lens is 'Normal' or 'Plano'. That's why they're referred to as Gauge Reading lenses. You need to know the dioptre value for your reading glasses.
Bifocal lens mask with gauge reading correction lenses.
Normal (plano) vision for top two thirds and "reading" (plus) correction for bottom third.
Supplied with the bifocal lenses fitted, plus the original normal (plano) lenses.
Bifocal / Gauge Reading corrective lenses are typically available in a dioptre range of +1.0 to +4.5, in 0.5 increments. If you have a quarter dioptre prescription, then increase to the next higher/stronger dioptre. Your eyes will inevitably change and within a few years, you will need the stronger dioptre. Now you can select a mask that has Bifocal / Gauge Reader corrective lenses available with the dioptre value(s) you need.
Note: The bifocal correcting mask lenses we sell have the reading correction attached via a permanent bond by the lens manufacturer. The correction is not an after-market 'stick on' or 'glue in' lens that is not permanent. Our own experience, plus that of our customers, very plainly tells us that none of the after-market 'stick-on' solutions work well, and thus we don't bother selling them.
Please note that all of the masks listed here can have corrective lenses fitted, but only a few of the masks can have bifocal, gauge reading corrective lenses fitted.
What Corrections Do We Offer?
We offer the following levels of prescription/correction, in half dioptre increments:
- Minus lenses from -1.0 to -9.0*
- Plus lenses from +1.0 to +4.5*
- Bifocal lenses from +1.0 to +4.5*
* available on selected masks only.
Please Note: The scripts issued by optometrists use quarter dioptre increments. We can only provide half dioptre increments. This is another reason why you should consult your optometrist, as they will be able to come up with the values you need.
What If I Have Astigmatism?
None of the 'off the shelf' corrective lens masks correct astigmatism, so if the majority of your prescription is astigmatism, or you have astigmatism over 2.00 dioptres, you will need a custom made product for best visual results.
If your astigmatism is less than 2.00 dioptres, or is not the majority of correction, then the corrective lens mask solutions we can provide should be fine. This is another reason why you should consult your optometrist.
Please Consult Your Optometrist
We strongly recommend that you consult your optometrist about which underwater vision correction solution is best for you. We recommend you show them this information. Your optometrist will be able to work out which corrective solutions are available to you and make recommendations as to what to get, plus provide the two dioptre values we need.
We are not optometrists and can't read your script to determine if a corrective lens mask will work for you. Correction lenses typically will work for the vast majority of people, but some eye shapes can't be accommodated this way.
Your prescription may need to be changed because the distance between the lens of your diving mask and your eyes typically is different from the distance between your eyeglasses lenses and your eyes. (This also is one of the reasons your contact lens prescription is different from your eyeglass prescription if you have moderate or high myopia.) An eye care professional specialising in sports eyewear can adjust your prescription for underwater use.
Your optometrist will also be able to provide you with the best spherical correction dioptre values for your left and right eyes given the half dioptre increments of corrective lenses. Then you can order your corrective lens mask from The Scuba Doctor with confidence in achieving a great outcome.
Whatever your preference, there are plentiful corrective options available to ensure that everyone can see clearly to experience the beauty and wonder of the underwater world.
Recommended Optometrist:
Melbourne: David Glennie is an optometrist and experienced scuba diver. His team can check your eyes and translate your script into the values we need for your corrective lenses. They can even show you how it will work.
David Glennie, Karingal Optical
Shop 39, Karingal Hub, 330 Cranbourne Road, Frankston VIC 3199
Tel. 03 9789 4811 www.facebook.com/KaringalOptical/
Fitting the Mask Corrective Lenses
If you buy a complete mask with two corrective lenses from The Scuba Doctor, we will fit the lenses to the mask for you before sending the mask out. You will also receive the original normal (plano) lenses, placed inside the packets the corrective lenses came in.
Corrective Lens Mask Delivery
Order today and your mask with corrective lenses will be assembled and usually Ship the next Business Day.
We typically place orders for your mask with corrective lenses with our suppliers the same day we receive the order from you. In some cases, they will be assembled and shipped directly to you from the suppliers the same business day, or if not, the next business day. Our suppliers are Sydney based, so you need to allow for the usual postal delivery times for the package to reach you from Sydney.
Colour Options: Many of the masks are available with heaps of colour choices. However, sometimes our suppliers get low on some colour options. Please enter any other mask colour options you'd be happy with in the comments during the checkout process. Then we have options to switch to so that your order isn't delayed.
Other Considerations
Custom made prescription lenses made to your exact prescription are sometimes preferred by more advanced divers, for those shooting underwater photo/video, or those who need a bifocal lens with two different types of correction in each lens. We suggest you try Ozbob Scuba for custom made prescription scuba masks.
Because you asked... the negative and positive vision-correcting mask lenses we sell have the magnification ground into the lenses themselves. The bifocal gauge reading correction is attached via a permanent bond by the lens manufacturer. The correction is not an after-market 'stick on' or 'glue in' lens that is not permanent. Our own experience, plus that of our customers, very plainly tells us that none of the after-market 'stick-on' solutions work well, and thus we don't sell them.
Contact Lens Wearers: Not all contact lenses are suitable for diving. Gas permeable lenses (GP lenses) can 'dig' into the eyes below certain depths, because of the pressure. Soft contact lenses can collect waterborne organisms and become contaminated, causing eye infections. If you wear contact lenses under your mask for diving, you need to make sure you blink a lot. Excessive starring can cause bubbles to form underneath your lenses and which may cause minor discomfort and temporary blurring of vision. Also, be sure to have a spare set of contacts (or glasses) available in case you lose a contact lens underwater.
Health Fund Refunds
As best as we can tell, you will be unable to claim a refund from your health fund for the supply of a corrective lens mask. Most health funds require a medical provider item code for a claim to be successful and no dive manufacturer or dive shop we know of has this. However, you may wish to check with your health fund to see if they are more generous.
More Information
For more information please see our Scuba Buying Guides: Buying a Great Dive Mask and Avoiding Mask Squeeze, plus our Dive Gear Features pages: Mask Features and Fixing Underwater Vision Problems.
Note: Diving/snorkelling masks are very different to Swimming Goggles. See Goggles vs Masks. We have available Prescription Swim Goggles.
OHS Policy and Risk Assessment
Introduction
While diving in all forms is generally a safe and fun activity, Chaordent Pty Ltd trading as The Scuba Doctor Australia has prepared this Occupational Health and Safety (OHS) Policy and Risk Assessment paper to demonstrate the actions and activities that are undertaken to minimise risk while diving with us.
Within this paper when we use the term 'Diving', we are referring to all activities from shore and boat snorkelling, scuba diving to technical and cave diving. We support all these activities and believe with the proper conditions and training, all forms of diving can be carried out safely.
All of our Instructors and other Dive Professionals are individually trained, so that you know our Dive Crew has the best skills knowledge and competency to look after you and yours while diving with us.
WHS Policy Statement
The Scuba Doctor Australia is committed to ensuring the safety of all staff, customers and visitors during dive operations, within the dive shop and while carrying out any activities in the workplace.
This includes ensuring that people are appropriately trained and certified to dive, medically fit to dive, that diving is conducted within appropriate conditions and that the equipment, including air provision, that is controlled by The Scuba Doctor Australia is regularly tested and maintained.
All persons diving, including staff are to read and sign an appropriate risk waiver and medical assessment as necessary.
GENERAL SAFE WORK METHOD STATEMENT FOR DIVING
Task | Hazards | What are the risks | Activities and tasks | Reducing the Risks |
Site Assessment before diving |
| Current and swell increase the potential for divers to become fatigued, swept from the dive site / operational area. Waves and Swell can force divers into walls or other impact points. Surface activity can lead to the potential for boat or prop strikes Limited Visibility can lead to divers becoming lost, or unable to see each other. Stings, Bites or cuts from marine life around the dive site Any infrastructure or machinery underwater that can injure or stop a diver from surfacing. |
| If there is any indications of risks the Dive Master is to assess if the dive is to proceed. The Dive Master is to brief the surface support officer of any conditions that may need to be observed during the dive. The Dive Master is to write any noted hazards and risks on the Dive Master Sheet before the dive commences. |
Pre-Entry |
| Potential for weight belts and other heavy items to fall onto people Divers will be gearing up and moving around the boat with the potential for slipping or dropping of items such as belts and tanks Failure to identify potential for gear failures underwater. |
| Weights to be issued one belt at a time. Only to be done in calm area. On arrival provide dive briefing on the site. Stress entry and exit and remind all participants that we are in a Marine Park and to respect the animals, we are in their home. Remind all divers to conduct buddy checks before moving to the entry area. |
Entry |
| Potential for Slips when moving to the water. Potential for incorrect entry technique causing injury to diver |
| Master / Skipper to assist divers on entry. Dive Master to check and brief on Entry Technique Check that the diver is OK before next diver enters |
In Water support |
| Divers may drift or swim out of the dive site area. Potential for boats that may enter the dive area |
| Ensure Dive Flag or lights are up and visable during in water activities. If off shore DM to carry a dive flag on a line. Be prepared to recall divers if necessary. |
Surfacing and Exit | Boat / Surface Strikes Slips Trips and Falls | Hits from items or boats on surface Divers may take fins off too early Divers may fall off the ladder Divers may be swept off feet by waves or current if they are shore diving |
| Dive Master to lead divers to a safe surface area Skipper / Surface Support Officer to warn off boats or surface hazards. Ensure that divers approach the ladder or shore with their fins on. Have them hand their fins up or remove them before exiting. Make sure that other divers or people are not in the way. |
After Diving | DCI / DCS Slips Trips and Falls Gear Failure / falling | Decompression Illness / Sickness Injury from falling, slipping due to swell, water or unstable uneven ground. Hit or strikes from falling items equipment, gear failure from changing tanks |
| DM to check that all dive times are in normal parameters Skipper / Surface Support Officer to assist DM as appropriate to store and change gear Check all tanks after changing Record Surface Interval to ensure it is within normal dive parameters. |
The Likelihood of Injury while Diving
Diving is generally safer than most other forms of outdoor activities.
The most common medical issues associated with diving are sunburn, seasickness and dehydration (all of which are preventable). There are actually few injuries requiring any sort of medical attention associated with diving. In 2017, there were only 1092 scuba-related emergency room admissions in the US. Compared to other popular sporting activities, average annual ER admissions in the US were:
- Diving – 1,092/year
- Snowboarding – 4,438/year
- Bowling – 19,802/year
- Volleyball – 57,303/year
- Fishing – 170,216/year
Overall this demonstrates that the likelihood of injury while diving is lower than many other outdoor activities.
Most of the medical injuries that occur are easily preventable, you can reduce these by having drinking water readily available to keep hydrated, wear sunscreen while in the sun, SPF 50 clothes and hats while on the surface and taking seasick tablets before going on boats to reduce the risk of getting sick.
Taking these simple precautions will significantly increase your enjoyment on the trip and ensure that the majority of injuries are preventable.
The Likelihood of Death
Like any activity or even as in life generally, there is a chance of a fatality occurring, as with the risk of injury the risk of death is significantly lower than with other activities. DAN (Divers Alert Network) keeps statistics worldwide on all diving accidents and provides the industry with an annual report on accidents every year.
DAN indicates that the fatality rate in diving has remained relatively stable over recent years at a rate of 2 per 100,000 participants.
This compares favourably to other forms of outdoor activity:
- Swimming - 6 per 100,000 participants
- Jogging - 13 per 100,000 participants
- Horseback riding - 128 per 100,000 participants
Most of the fatalities within scuba diving are precipitated by a previous health related event or circumstance. The highest risk of fatalities is in people with pre-existing blood pressure or heart conditions and the most common age group for fatalities being the 55+ age group.
This is why a Dive Medical is essential for any person within these categories whether they are thinking of starting diving or have years of experience. It is important to ensure that you understand and dive within your personal limits, and head to the surface if you ever feel unwell.
What is the risk from Marine Life
The risk of attack or harm from any marine life is negligible as long as the Diver behaves responsibly. In fact there are no known incidences of a diver being harmed by Marine Life on a tour with The Scuba Doctor Australia.
Never Touch Marine Life — The vast majority of recorded Marine Injuries throughout the world are the result of inappropriate attempts to touch marine life and the animal attempting to defend itself. It should be noted that fatalities from these injuries are counted in the numbers above.
Are Sharks a Danger?
Sharks and Shark attacks are probably the greatest overrated threat to divers that there is. From 1989 to 2010 a period of twenty years, there were 2 recorded shark attack fatalities involving divers WORLD WIDE.
Statistically the ABS report "What Australians Die Of" indicates that the chance of a person dying from a shark attack in Australia is 0.125 in a million. Compare this to other normal activities that we do everyday without even thinking of the risk, such as driving 1.1 in a million, jogging or running 7 in a million, swimming 12 in a million, or simply slipping and falling 13 in a million. The actual risk is extremely low, no one really considers sitting at home (1.3 chance in a million of dying from falling off a chair) to avoid these risks, yet people actually don't Dive out of fear of sharks.
In fact there is more chance of being killed by bees, snakes, horses, tapeworm, cows, dogs or even kangaroos than there is of being attacked by a shark. The biggest killer of humans in the world is actually mosquitoes, closely followed by other humans.
Almost 77 people in the last 10 years in Australia died from horse related activities, compared to 22 from shark attacks. Therefore we at The Scuba Doctor Australia are big advocates of horse nets, and firmly believe they should be installed at each Pony Club and Race Tracks to protect us. However Governments have continued with a wasteful and statistically ridiculous project to attempt to kill sharks through nets, damaging and killing multiple other harmless marine animals such as whales, dolphins, turtles, rays, and harmless sharks.
Humans are much more of a threat to Sharks, than sharks to humans, with an estimated 70million sharks killed by humans every year for fins, teeth or even just sport.
Why do Diving Accidents Occur
Most accidents occur due to overconfidence on the part of the participants or attempting activities that are beyond their level of training. What is commonly referred to as diver error.
People who dive within their level of training, ensure that their gear is maintained and kept in proper working order, practice the skills that they have been taught and follow directions of the Dive Masters who they are diving with are unlikely to have any serious issues.
If you feel unsafe at all you should discuss the issue with the Dive Master. You should never dive if you feel unsafe, and if you are underwater and feel unsafe, you should abort the dive and ascend as per your dive profile requirements.
How Many Incidents Occurred at The Scuba Doctor
Within the last 12 months at The Scuba Doctor Australia there were no recorded WHS incidents that occurred.
Training for the Dive Crew
The Dive Crew is made up of all staff and contractors employed or retained by The Scuba Doctor Australia to conduct, organise and support Dive Operations.
All staff have specific responsibilities under the Safety Management System and as a result must be provided with appropriate training. All Dive Crew, receive the following training as part of their role:
- Safety induction training to the vessel's risk assessment and management program,
- The SMS and in particular its emergency plans and SWMS.
- First aid
- Customer Service
- Environmental Practices
The crew training program ensures:
- The Dive Crew is capable of competently fulfilling the duties and responsibilities of the role.
- That any extra training necessary to maintain currency of competency or respond to opportunities for improvement is identified and delivered.
- The owner is responsible for ensuring the delivery of crew induction safety training and ongoing learning and development opportunities.
- The Safe Working Method Statements (SWMS) of the vessel's SMS and information in its emergency plans provide a basis for crew training for normal operations and identified emergency situations
Risk Management Statement
I, Lloyd Borrett, Director of Chaordent Pty Ltd trading as The Scuba Doctor Australia, am the Designated Person as per the The Occupational Health and Safety Act 2004 (OHS Act) and associated regulations. I am also the principle owner of the business and controller of the premises.
I have conducted an assessment of risks associated with the shop and its commercial dive operations as per the requirements of the OHS Act.
The Staff and Crew of The Scuba Doctor Australia (known collectively as the Dive Crew), have had the opportunity to review and comment on the draft of this document, the Safety Management System, the Safe Work Method Statements and their feedback has been assessed and utilised as appropriate to form the final version.
The Scuba Doctor Australia risk assessment and management process is modelled on requirements of AS/NZS ISO 31000:2009.
All current risks (at the time of writing) are recorded in the store Safety Management System and make up the findings in the Diving Assessment of Risk. These have been individually assessed and controlled as possible and this process has been documented as part of our commitment to safety.
The on-going process for reporting hazards and incidents is included within the staff training processes document and is full accepted as a shared responsibility by all staff. This will form the basis of the on-going review process which will occur in response to any incident or near miss.
A formal review will be undertaken on an annual basis and be carried out in consultation with the Dive Crew as detailed within the Safety Management System for The Scuba Doctor Australia
Lloyd Borrett
Owner, Chaordent Pty Ltd trading as The Scuba Doctor Australia
Last Reviewed on 19 September 2019
1st Drafted September 2019.
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