Certified 100% T Titanium
Vision Council of America
Certified beta Titanium
The Vision Council of America marking guide-lines for titanium uses a symbol that would normally appear on the demonstration lens of the display frame. A, Certified 100% Titanium means 90% titanium and there is no nickel contained in the frame. B, Certified Beta Titanium means
70% minimum titanium with no nickel content.
Nickel is one of the common contact allergens
Nickel allergy is a common cause of allergic contact dermatitis — an itchy rash that appears where your skin touches a usually harmless substance. Nickel allergy is often associated with earrings and other jewelry. But nickel can be found in many everyday items, such as coins, zippers, cellphones and eyeglass frames.
• Titanium is hypoallergenic. It should be noted that titanium is Often used in combination with Other
metals. If the wearer is allergic to another of the metals in the alloy, then, unless the frame is
appropriately coated, allergic reactions could still occur. But when titanium is not mixed with other
metals, it is the metal of choice for those with skin
Magnesium
Magnesium is even lighter in weight than titanium. Frames made from magnesium are extremely lightweight and exceptionally durable. The exterior of the frame is normally sealed because of the corrosiveness of raw magnesium. Magnesium is also used as part of an alloy in combination with other metals.
Companies that specialize in frame repairs may offer
this service. (Incidentally, some dispensers have tried
to just coat the inside Of the temples With clear nail
polish to solve the problem. Unfortunately, this does
not work for very long.)
Use ultra thin, clear heat-shrink tubing over the
temples. Optical shrink tubing is available from
optical suppliers Of spare pairs, pliers, and
accessories.
If a person has an allergic reaction to nosepads, there are replacement pads available that will eliminate the problem. These pads are:
• Gold-plated metal nose pads
• Titanium nose pads
• Crystal nose pads
(See also the section in Chapter 10 on Hypoallergenic Nosepad Materials.)
For allergic reactions to metal cable temples, use a temple cover to cover the temple. Temple covers come in plastic, vinyl, and silicone materials. There is also "heat shrink" tubing sold for this purpose, which reportedly takes care of eliminating allergic reactions
An additional note on allergies: There is a liquid lens
liner sometimes used in the groove of a frame to make
a loose lens more secure. This material contains latex
and should not be used on frames whose wearers have
latex allergies.
Vision Council of America
Certified beta Titanium
The Vision Council of America marking guide-lines for titanium uses a symbol that would normally appear on the demonstration lens of the display frame. A, Certified 100% Titanium means 90% titanium and there is no nickel contained in the frame. B, Certified Beta Titanium means
70% minimum titanium with no nickel content.
Nickel is one of the common contact allergens
Nickel allergy is a common cause of allergic contact dermatitis — an itchy rash that appears where your skin touches a usually harmless substance. Nickel allergy is often associated with earrings and other jewelry. But nickel can be found in many everyday items, such as coins, zippers, cellphones and eyeglass frames.
• Titanium is hypoallergenic. It should be noted that titanium is Often used in combination with Other
metals. If the wearer is allergic to another of the metals in the alloy, then, unless the frame is
appropriately coated, allergic reactions could still occur. But when titanium is not mixed with other
metals, it is the metal of choice for those with skin
Magnesium
Magnesium is even lighter in weight than titanium. Frames made from magnesium are extremely lightweight and exceptionally durable. The exterior of the frame is normally sealed because of the corrosiveness of raw magnesium. Magnesium is also used as part of an alloy in combination with other metals.
Companies that specialize in frame repairs may offer
this service. (Incidentally, some dispensers have tried
to just coat the inside Of the temples With clear nail
polish to solve the problem. Unfortunately, this does
not work for very long.)
Use ultra thin, clear heat-shrink tubing over the
temples. Optical shrink tubing is available from
optical suppliers Of spare pairs, pliers, and
accessories.
If a person has an allergic reaction to nosepads, there are replacement pads available that will eliminate the problem. These pads are:
• Gold-plated metal nose pads
• Titanium nose pads
• Crystal nose pads
(See also the section in Chapter 10 on Hypoallergenic Nosepad Materials.)
For allergic reactions to metal cable temples, use a temple cover to cover the temple. Temple covers come in plastic, vinyl, and silicone materials. There is also "heat shrink" tubing sold for this purpose, which reportedly takes care of eliminating allergic reactions
An additional note on allergies: There is a liquid lens
liner sometimes used in the groove of a frame to make
a loose lens more secure. This material contains latex
and should not be used on frames whose wearers have
latex allergies.
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