Joe Shovlin, OD, FAAO
Optometry Times Editorial Advisory Board member
1. Allow ample time for stabilization and equilibration before evaluating rotation.
2. Don’t chase around strange or excessive amounts of rotation (not consistent from lens to lens). Your yield for success will drop off considerably after the first reorder. Try another option or design.
3. A careful sphero-cylindrical over-refraction can be very enlightening. Rotation is often revealed to its fullest extent. Also, when a lens rotates, dial it back to the 6 o’clock position to see what happens. Does it return, or does it now stay at 6 0’clock?