TUSA Freedom Ceos Negative Prescription Dive Mask

See reefs, marine life and your dive buddy more clearly with the TUSA Freedom Ceos Negative Prescription Dive Mask. Designed for short-sighted divers and snorkellers, this premium prescription mask combines the comfort and low-volume design of the TUSA Freedom Ceos with high-quality negative corrective optical lenses.

The full-lens prescription correction helps improve distance vision across the entire viewing area. Unlike bifocal or gauge-reader lenses that correct only a small section, these negative lenses provide consistent correction throughout each lens, giving you a clearer and more enjoyable underwater experience.

Choose the required diopter separately for your left and right eye. Available from -1.0 to -8.0 in 0.5-diopter increments, the mask can accommodate different prescription strengths for each eye.

TUSA Freedom Ceos Prescription Mask Features

• Premium prescription scuba diving and snorkelling mask
• Full negative corrective lenses for improved distance vision
• Available from -1.0 to -8.0 diopters
• Supplied in convenient 0.5-diopter increments
• Separate prescription selection for the left and right eye
• High-quality corrective optical-glass lenses
• Low-volume dual-lens design
• Wide, clear underwater field of view
• TUSA Freedom Technology silicone skirt
• Soft, comfortable seal that adapts to facial movement
• Rounded skirt edges help reduce facial pressure
• Five-position strap-angle adjustment
• Quick-adjust buckle system
• Comfortable 3D mask strap
• Suitable for scuba diving, freediving and snorkelling
• Corrective lenses supplied professionally fitted

Clearer Underwater Distance Vision

The included TUSA negative corrective lenses are designed for people with short-sightedness or myopia. They help distant objects appear sharper, making it easier to see:

• Marine life and reef formations
• Your dive buddy and dive leader
• Hand signals from a distance
• Boats, mooring lines and surface reference points
• Underwater navigation features
• Your surrounding dive environment

Clearer distance vision can improve comfort, confidence and situational awareness throughout your dive.

Full-Lens Negative Correction

These premade prescription lenses provide negative correction across the complete viewing area. This gives you consistent distance vision wherever you look through the mask.

The lenses are manufactured from high-quality optical glass for excellent clarity and dependable underwater performance. Because each side is selected individually, different diopters can be fitted when your left and right eyes require different correction strengths.

Freedom Technology for Superior Comfort

TUSA’s Freedom Technology combines several silicone skirt features to create a soft, secure and comfortable facial seal.

The skirt uses varying silicone thicknesses, stability ridges and a rounded edge that flex naturally against the face. This helps reduce pressure while maintaining a reliable seal during longer scuba dives and snorkelling sessions.

Low-Volume Dual-Lens Design

The Freedom Ceos features a compact, low-profile design that places the lenses close to the eyes. This helps create a broad field of view while reducing the amount of air inside the mask.

Lower internal volume also makes the mask easier to clear and equalise, providing practical benefits for recreational and experienced divers.

Available Negative Diopters

Select the appropriate strength for each eye:

-1.0, -1.5, -2.0, -2.5, -3.0, -3.5, -4.0, -4.5, -5.0, -5.5, -6.0, -6.5, -7.0, -7.5 or -8.0

Availability may vary between prescription strengths.

Selecting Your Prescription Lenses

The corrective lenses provide negative spherical correction only. The selected diopter corresponds to the SPH or Sphere section of your optical prescription.

These premade lenses do not correct:

• Cylinder or CYL
• Axis
• Astigmatism
• Prism measurements

Choose the required diopter separately for your left and right eye. If you are uncertain which lens strengths are suitable, ask your optometrist for advice before ordering.

What’s Included?

• One TUSA Freedom Ceos dive mask
• One selected left negative corrective lens
• One selected right negative corrective lens
• Professional lens installation
• Protective mask case

The TUSA Freedom Ceos Negative Prescription Dive Mask is an excellent choice for short-sighted divers seeking clearer underwater distance vision, premium comfort and the reliable quality of a genuine TUSA mask.

Please note: These are premade negative spherical lenses and are not custom optometrist-made prescription lenses.