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.
10 Things Your Eye Doctor Wants You to Know. Retinal detachment is a serious condition that can lead to blindness in the affected eye. Seek immediate medical care (call 911) if you have serious symptoms such as sudden blurring of vision, bright flashes of light, sudden increase in floaters, and partial blindness.