Clinical History:
Spectacle VA: <6/60
Rigid lens potential VA: 6/24
Fellow eye: nil L/P, wears cosmetic shell.

Contact lens history:
1981. An impression PMMA Scleral lens was issued after recovery from the acute phase. This was worn successfully for 23 years.

1998. Tolerance to the PMMA lens began to be more difficult, so a preformed RGP sealed scleral lens, fitted with corneal clearance, was issued. Her tolerance improved, but the VA was inferior. A second lens with central corneal contact gave a significant improvement in VA and, surprisingly, was more comfortable.

2000. The RGP scleral lens has been worn for 24 months with improved tolerance compared to the PMMA lens. The patient also reported an improvement in clarity of vision. The recorded VA was much the same as before, at 6/24, although 6/18 has been recorded on some occasions.