Abstract:

 Retinal blood oxygen saturation measurement methods can be divided into invasive and noninvasive techniques. The invasive method uses oxygen sensitive microelectrodes to measure the oxygen saturation directly. The results are accurate, but only applied in animal experiments, not applicable to the human body yet. The noninvasive methods include multi-wavelength fundus photography and optical coherence tomography (OCT). The former method is fast and convenient, which has currently been widely used in clinical research. OCT can scan the retina and choroid in depth, but there has been little research using this method. Retina is the only organ in the body where we can observe the blood vessels and their distribution pattern directly in vivo. The advancement of these technologies will enrich our knowledge about the ocular diseases.  (Int Rev Ophthalmol,  2017,  41:   56-61)