Gas-Permeable Scleral Contact Lenses
glass scleral contact lenses were made by very skilled glass blowers at
the end of the 19th century. They were fitted in England by Dallos until
early 1970.The introduction of Polymethyl Methacrylate (Perspex) which
could be made to fit eyes accurately allowed scleral lenses to be made
to treat many medical situations these developments were minimised by
the non-porosity and non-permeability of Perspex itself.
or corneal lens was a natural follow on from the scleral lens and the
discovery of gas-permeable plastics both in hard and soft forms caused
the usage of Perspex based scleral contact lenses to recede in their favour.
As with the glass blowers, the numbers of skilled conventional scleral
lens fitters has also dramatically declined.
ten years has seen the gradual re-introduction of scleral contact lenses
in higher permeable plastics with modified fitting procedures and improvements
beyond initial expectations, surpassing the benefits of corneal and soft
lenses for many moderate and severe ocular disorders.