High myopia associated with cone dystrophy is relatively rare in clinical practice. Because the two diseases have a certain genetic predisposition, with the disease developed, clinical examination and clinical symptoms have some similarities, one disease diagnosis is easily confused or masked by the other diagnosis, especially in the face of patients with high myopia associated abnormalities, we should carefully screen abnormal visual function of its own or combined cone dystrophy diagnosis. In addition, the development of the disease may mutually reinforce, aggravate the symptoms of each other, which is likely to cause mission or misdiagnosis, or delay the proper treatment. Therefore, it is clinically difficult to correct and comprehensively and timely diagnosis.
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