Neat! I have for the past 40 years had a new prosthesis made every second year or so by F.Ad. Müller Söhne [1] – it is always a wonder to see the ocularist work with miniature glass blowing equipment creating an eye fit just for you.
The tissue around the eye socket changes over time, and the eye can become scratched, even with careful maintenance.For these reasons you should replace your eye every three to five years, more often for children.
Additionally, you can have the ocularist recenter the eye prosthesis so that it better matches the orientation of your normal eye. Most eye prosthesis are approximate hollow quarter spheres resting on the eye musculature so that they can move in unison with the other eye.