Posted on

New Dive Light add ons for Prescription Dive Mask Orders

High end diving light.

Dive light options for your dive mask purchase

As you descend through the water column, divers see a loss of color in the order of the colors of the rainbow. Most noticeably, reds are lost very quickly. This occurs because water absorbs various wavelengths of the light spectrum more rapidly than others. 

One way to counter this is by using a tinted lens mask. We do offer several masks with these color correcting options such as the M100 (color correction model). Divers can also use a light bring back colors lost at depth. Both options are viable, but I love to have a little light in my BCD that helps me also look under crevices or as a backup during a night dive. 

To continue with our mission of helping divers see clear, we recently added two dive light options you can easily add to your dive mask order, which will help you see colors vividly during a day dive or even serve as a primary light at night. 

Introducing the Apollo Dive Light (MSRP $180) and the Lumo ($156).

In this article, I will go over my hands on experience with these dive lights, costs, and how to order them with your prescription dive mask.

High end diving light.
Apollo dive light with light shield extended.
High end dive light from See the Sea
Lumo Dive Light

Overview of the apollo & Lumo dive lights

Size & batteries

When I was first certified to dive (I don’t want to age myself here), I bought myself a brand new dive light. It took 8 D cell batteries, and I thought it was the brightest light they would ever be able to create for diving. Shortly after I bought that light, HID lights hit the market, but were very expensive. If you broke the bulb, it would be at least $100 to get a replacement.

The advent of LED lights have not only eventually reduced the cost of high end dive lights, but the size and energy consumption as well. Now a light that can fit in your hand has a bulb that will almost last forever and can serve as your primary dive light. 

Both the Apollo and Lumo dive lights are cheaper than my first dive light, smaller, and brighter. Both dive lights are about the same size, but the Apollo light (on the left in the image) is slightly longer.

The dive lights accept two CR123 batteries (not included) or 1 rechargeable 18650 battery (not included). My recommendation would be to purchase the slightly more expensive rechargeable batter as you will get much more use out of it (and CR123 batteries are not super cheap on their own anyway). Run time will depend on what mode you operate the light in, but moderate use should be several hours on a charge.

 

Control & Modes of the dive lights

Scuba dive light controls

I have  always preferred buttons to twist controls, but the Apollo light has me converted. My main complaint with twist controls is the risk of either opening the light or the controls being too difficult to utilize while diving. The Apollo solves this by having a free rotating control bevel that is separate from the main body of the light. You cannot risk flooding the light by rotating the bezel. You rotate the light to operate the modes including off, on brightness level 1, on brightness level 2, on brightness level 3, and flashing/sos. The bevel rotates easily, and there is a satisfying click as you change modes. As both models are made from lightweight aluminum, the Apollo feels great in the hand- well built and sturdy. 

The Lumo, the slightly cheaper of the two lights, operates with a push button. When turning on the light, you must hold the button down for 10 seconds (a safety feature designed to ensure it doesn’t turn on from a momentary bump in your bag or while traveling), which made me think my batteries were dead at first. Once the light is on, you cycle through the modes, which includes a flashing SOS mode with a quick push of the button.

* KEEP IN MIND LIKE ALL DIVE LIGHTS THESE LIGHTS ARE DESIGNED FOR USE UNDERWATER AND WILL EMIT SIGNIFICANT HEAT IF LEFT ON ABOVE WATER*

The Apollo light has printed icons indicating what modes are available and what mode you are in without having to cycle through the beams. 

Beams & Special Features

The Apollo is the brighter of the two lights, but that is not the only difference when it comes to the light emitted by the different models. The Apollo has two innovative features. A removable diffuser which screws onto the end of the light as well as a shield that extends and retracts preventing the light from spilling into your eyes. Check out the gallery below to see the difference in beams between the lights as well as the diffuser on the apollo light. 

How to purchase a dive light with your prescription dive mask

Adding the Apollo or Lumo dive lights to your order is easy. After you build out your prescription mask, there is a section of available accessories. Click on either light to add it to your order. To start, build out your prescription dive mask here.

Posted on

Scuba Diving with Astigmatism

Scuba Diving with Astigmatism

If you wear glasses, you may wonder what options are available to you for scuba diving or snorkeling. Specifically, if you require cylinder correction for astigmatism, can scuba diving masks or goggles accommodate your visual needs while scuba diving with astigmatism?

In our post, we will cover:

  • Basics of astigmatism
  • Reading your prescription
  • Options for scuba diving with astigmatism

If you already know you want one of our prescription diving masks which can correct for astigmatism, from See the Sea RX, the leaders in underwater vision, click the button below to see our order page.

Order an RX Diving Mask with Astigmatism Correction

If you want to read more information about diving and astigmatism, keep on reading!

What is Astigmatism?

Astigmatism was first described by Thomas Young, who noticed his vision problems when he was only a student, and he released his report in 1801. George Airy obtained the first corrective lenses (cylindrical lenses)  in 1827. 
Simply put, astigmatism, is an irregular shape of the cornea causing various vision problems including distortion or blurred vision (refractive error). The underlying causes are not completely understood, but scientists believe genetics play a large role in the formation of the condition.

Astigmatism, the Eye, and Diving

Understanding your Prescription for Astigmatism Correction

Most of us have two eyes, and our doctors have to distinguish what corrective lens belongs to each eye. Some prescriptions make this simple by using R or Right for the right eye and L or Left for the right eye. Other prescriptions use the terms OD & OS.

OD and OS are Latin abbreviations:

  • OD- Oculus Dexter- Right Eye
  • OS- Oculus Sinister- Left Eye

 

There are several other fields on your prescription which are important when ordering a prescription dive mask. 

Sphere (SPH)

The sphere is your lens power vision, displayed in diopters. The sphere can be negative or positive, and the distinction is very important. Negative sphere powers correct for nearsightedness. Positive sphere powers correct for farsightedness. 

If your sphere power is greater than +/- 4, you may want to consider our high index glass options in our dive masks for scuba diving or snorkeling as the lenses become thicker as the power increases. At +/- 6, we require the use of our high index glass (+$60.00). 

The correction is equal in all meridians of the eye, meaning the lens is spherical. The sphere power does not correct for astigmatism. The cheaper premade dive lenses are only available in sphere powers, and do not correct for astigmatism.

Cylinder (CYL)

The cylinder described the lens power for astigmatism and this is one of the critical measurements to have when scuba diving with astigmatism. Like sphere, the cylinder correction is preceded by a positive or minus sign. 
The cylinder, unlike the sphere of the lens, is not distributed equally throughout the lens, but is curved in such a way to correct for the incorrect curvature of the cornea. See the Sea RX’s prescription dive masks are able to incorporate the cylinder correction of your prescription to ensure you can see clearly underwater.

If your prescription lists no value or SPH/Sphere written under cylinder or CYL, your doctor has not prescribed any astigmatism correction for your corrective lenses. 

Axis

Unlike Cylinder and Sphere, the Axis is not a power or standalone correction, but a description of how the cylinder correction should be implemented on the lens. The Axis, measured from 0-180 (standard protractor scale). In simple terms, the axis describes how the lens should be turned prior to insertion into the mask to ensure you can see correctly while diving with astigmatism.

Options for Scuba Diving with Astigmatism

Prescription Dive Mask

If you want to scuba dive or snorkel with astigmatism, our dive masks include cylinder corrections and can help ensure you see clearly while diving. We construct our prescription dive mask lenses out of glass and guarantee them for life. 

Contact Lenses

Wearing contact lenses helps millions of people see daily without the bulk of glasses. Lots of divers report being happy to wear contact lenses while diving; however there are several concerns with contact lenses and diving.

Specially during your dive training, you will have to flood your mask multiple times which can result in a lost lens which would be catastrophic for individuals with severe optical corrections. There are also potential risks of infection.

 

Order an RX Diving Mask with Astigmatism Correction

 

Additional Reading:

How to choose a dive mask for prescription lenses   

More about astigmatism