Complex sentence: In May 2002, al-Jarmri traveled to Germany and while undergoing medical checkups for a back surgery, it was discovered he had a thrombus behind his eye dating to his jail time.
Split into simpler sentences: In May 2002, al-Jarmri traveled to Germany for a spinal surgery. While undergoing medical checkups, it was discovered he had a thrombus behind his eye dating to his jail time.