The choroidal depression is a very serious eye disease, seriously affects the patient’s vision, so that vision loss, see things with difficulty, will bring patients a lot of pain, patients with this disease, need to be vigilant, timely to the regular hospital for treatment, otherwise it will directly affect the quality of life of patients, then the choroidal depression of this symptom is how to cause it! 1, the main factor causing choroidal depression, choroidal malignant melanoma, in general, choroidal malignant melanoma, in the early stage, the patient is not easy to find, no conscious symptoms, with the development of time, the patient will appear vision loss, visual deformation, there is a dark shadow in front of the eyes, there will be persistent hyperopic refractive error increase. 2.When choroidal malignant melanoma develops to a certain degree, the tumor will increase in size, secondary to retinal detachment, which seriously affects vision loss and will bring greater pain to the patient and affect the patient’s life so much that this disease must go to a regular hospital and take the most effective treatment method. 3, when the patient is receiving treatment, must actively cooperate with the doctor, according to the doctor’s instructions to do, but also pay attention to good care measures, the care of this disease, for patients play a very important role, only to take scientific care measures, in order to allow patients to recover as soon as possible.