Paving-stone-like degeneration appears as small white prolate or oval foci of choroidal retinal atrophy with well-defined borders, which may be accompanied by massive pigmented spots. The choroidal vessels are clearly visible in the lesions. What is the fundus examination of pavement stone-like degeneration? 1.Genetic examination. 2.Histopathology. The degenerative myopic eye grows and enlarges, the lesion is mainly in the equatorial part especially in the posterior pole, the sclera thins and forms scleral chylomalacia in the posterior pole. The choroid is thin, the stromal pigment is lost, the number of blood vessels is reduced, and small vessels and capillaries disappear. the Bruch’s membrane is thin and may rupture. The ciliary body is markedly atrophied, mainly by hypoplasia of the annular muscle fibers. The choroidal retina is atrophic and the RPE in the atrophic area disappears completely. the RPE proliferates significantly to form Fuchs, which is covered with a gelatinous, cell-free exudate. 3. Fundus fluorescence angiography. In mild diffuse lesions, there are dotted or linear spots in the posterior pole of the arterial phase in the form of paint cracks. With the extension of time and enhanced brightness, but does not expand, the background fluorescence disappears after a long time, severe lesions with atrophic plaques in the posterior pole, the imaging shows that the arterial phase has extensive dotted, linear or lamellar fluorescence spots or shows strong fluorescence areas and weak fluorescence areas. This indicates that the choroidal capillary layer is atrophied and coarse choroidal vascular filling is visible.