Prosthetic Materials -
Glass, PMMA
Previous
Next
Previous
Next
Bild Wahl des Materials
Font size

 

 

Glass or Acrylic? A Material Question.

 

Following thorough examination and consultation your ocularist will recommend the material which he believes to be most suitable to achieve the best result for the patient.

 

For patients covered by statutory health insurance it is the insurer who will ultimately decide on the material to be used, based on a cost-estimate supplied by us, and, if required, a medical justification by the ophthalmologist.

 

Because of the composition of the tear fluid, environmental factors and time-induced changes ocular prostheses made of glass become rough and worn after about 1 to 2 years and should then be replaced.

 

Acrylic prostheses should be polished at least once a year. Different from glass prostheses, however, they can then be reworked and modified and therefore be worn for several years.

 

Because of growth and growth-related changes taking place in the socket of children, new glass prostheses will need to be fitted and acrylic prostheses enlarged more often.

 

A very important reason for this is that by wearing a prosthesis practically all the time and by having it continually adjusted to keep up with growth, a growth stimulus is imparted to the tissues and bone structure of the orbit. So when the child is fully grown, the face half carrying the defect will look almost exactly identical to the other half.


Künstliche Augen aus Kryolithglas

 

 

Artificial Eyes made of Cryolite Glass

 

Each artificial eye made of cryolite is a subtly shaped, delicately painted richly nuanced and unique product of highest craftsmanship. As a material for eye prosthetics cryolite has proven its worth for well over 100 years.

 

And that is not even the whole story: cryolite does not contain any potentially harmful substances whatsoever and therefore causes no irritation to the highly sensitive tissues in the socket. Cryolite glass is not just neutral, its surface is even capable of absorbing small amounts of tear liquid with the effect that the artificial eye has excellent slide properties and motility, making the prosthesis look more life-like.

 

Cryolite prostheses require utmost care and attention. To find out more about this please click on the button "Care Instructions".





















 

 

Artificial Eyes made of medical-grade Polymethamethylacrylate (PMMA)

 

PMMA is a highly bio-compatible material that has been tried and tested for decades in the United States. The most important advantages of PMMA are its excellent compatibility with the tissues, its surface hardness and that it is not fragile and easily shaped.

 

Perhaps the biggest advantage of acrylic prostheses is that they allow the application of impression techniques thanks to which the rear of the prostheses can be precisely fitted to the shape of the socket. This prevents secretion at the back of the prostheses and also improves motility. In cool climates PMMA provides a very comfortable wear experience.

 

PMMA prostheses can be worn for several years. They can be modified but have to be polished at least once a year.

 

If you are looking for information on how to care for your prosthesis please go to "Care Instructions".