I have some friends that if you look them up at registry.faa.gov they
show a special issuance and their medical is restricted to 1 year etc.
Here are a couple examples of class 2 medicals that are not valid after
1 year for any priv.


Medical Class : Second Medical Date: 01/2005

MUST WEAR CORR LENSES & POSSESS GLASSES FOR NEAR & INTRM VISION.


NOT VALID FOR ANY CLASS AFTER.




Medical


Medical Class : Second Medical Date: 10/2004

MUST WEAR CORRECTIVE LENSES.


NOT VALID FOR ANY CLASS AFTER.