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.
Mayo Clinic doctors have expertise treating retinal diseases with medications, surgery, laser therapy and other options. Mayo Clinic offers an option called retinal prosthesis, which may help some people with severe vision loss or blindness owing to retinal disease. Research. Mayo Clinic physicians conduct retinal disease research and share knowledge to help advance care for people everywhere.