Eye pain has greatly diminished too. eye strain (so very common, esp if you work on a computer for many hours at a time). Eye pain could also be a sign of arthritis (esp rheumatoid arthritis) - do you have any other aches and pains. Have a full blood count, and ask to check your antibodies to rhuematoid arthritis and lupus.
SSI: Social Security Income: SSI: Strategic Studies Institute (US Army War College) SSI: Sensitive Security Information (US DoT)
The SSA. The acronym SSA (side-side-angle) refers to the criterion of congruence of two triangles: if two sides and an angle not include between them are respectively equal to two sides and an angle of the other then the two triangles are equal. (It is of course assumed that the equal angles at hand are adjacent to a pair of equal sides.)