An example of one of these devices is a column chromatography bed, meaning that the stationary bed is in a tube. In some situations, chromatography is used as a method of purification. This is referred to as preparative chromatography. Another use of chromatography is analytical chromatography. This method of separation occurs with smaller amounts of material and is used to measure analytes in a mixture.
Flashing lights and floaters may be the initial symptoms of a retinal detachment or of a retinal tear that precedes the detachment itself. Anyone who is beginning to experience these symptoms should see an eye doctor (ophthalmologist) for a retinal exam.
Specialists Involved. Primary care doctors and internists often diagnose and treat Raynaud's. If you have the disorder, you also may see a rheumatologist. This is a doctor who specializes in treating disorders of the joints, bones, and muscles. Rheumatologists diagnose and treat many of the diseases that are linked to secondary Raynaud's, such as scleroderma and lupus.