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 SPI (as per RFC 2401) is a required part of an IPsec Security Association (SA) because it enables the receiving system to select the SA under which a received packet will be processed. An SPI has only local significance, since it is defined by the creator of the SA; an SPI is generally viewed as an opaque bit string. However, the creator of an SA may interpret the bits in an SPI to facilitate local processing.