The improvement of diagnostic levels for fundus diseases depend on the advancements of fundus imaging technology. Different fundus imaging technologies allow doctors to inspect ocular fundus from different aspects such as morphological or functional changes of retina. As a basic fundus examination method, optical coherence tomography provides highresolution and crosssectional retinal images coupled with noninvasive advantages. Fully understanding of the advantages and disadvantages of each fundus imaging technique, appropriate choosing one or combining several imaging techniques, and optimizing diagnostic procedures for each fundus disease are crucial steps to improve our diagnostic levels of ocular fundus diseases.
We have studied retrospectively 13 eyes with postoperative choroidal detachment of retinal detachment surgery in 126 cases(129 eyes).The frequency of choroidal detachment in this series is 10.1%(13/129).And we found that the middle-aged patients were more common sufferers,and drainaging the subretinal fluid,the extent of retinal degeneration and the buckling procedure might be the related factors to the occurence of postoperative choroidal detachment of retinal detachment surgery. （Chin J Ocul Fundus Dis,1993,9:210-213）
Optical coherence tomography angiography (OCTA) is a new diagnostic technique in recent years based on the optical coherence tomography. It is one of the fastest developing imaging examinations in ophthalmology. Compared with the classic diagnostic methods of fundus fluorescein angiography and indocyanine green angiography, OCTA show the ability to reveal blood flow non-invasively. With the development of modern medical detection technology, the requirement for ophthalmic diagnosis is raised, and many new measurement methods begin to apply in research and clinical, which makes the detection methods in the field of ophthalmology more accurate and comfortable. OCTA is a novel and noninvasive flow imaging technique, and it has the advantages of high resolution, fast scanning, as w ell as quantifying blood flow. Meanwhile, this technique can not only qualitatively analyze the shape of ocular blood vessels, but also be able to measure the ocular blood vessels and blood flow non-invasively, as well as to assess the depth of lesions. At present, with a wide clinical application in ophthalmology, OCTA still has its own superiority and weakness, but with the development of technology. It is believed that the OCTA will be expected to replace the relevant invasive examination methods and become a new tool for ophthalmic imaging.