An evaluation method of degree of visual perception is implemented by a processing unit, including the following steps of: (A) receiving a plurality of input signals generated by an input unit in response to a subject's input operation； (B) for each input signal, obtaining a plurality of brainwave measurement signals in a predetermined time interval before and after the input signal is received from a brainwave measurement device； (C) performing signal conversion on the brainwave measurement signals； (D) obtaining an embedded dimension and an optimal delay time, according to the converted brainwave measurement signals； (E) obtaining a phase space, according to the embedded dimension and the optimal delay time； (F) obtaining an index, according to the phase space； and (G) generating an evaluation result related to the subject's degree of visual perception, according to the embedded dimension, the optimal delay time, and the index.一種視覺感知程度評估方法，由一處理單元來實施，包含以下步驟：(A)接收一輸入單元回應於一受試者之輸入操作所產生的多筆輸入訊號；(B)對於每一輸入訊號，從一腦波量測裝置獲得在接收到該輸入訊號時的前後一預定時間區間的多個腦波量測訊號；(C)將該等腦波量測訊號進行一訊號轉換；(D)根據轉換後該等腦波量測訊號獲得一嵌入維度及一最佳延遲時間(E)根據該嵌入維度及該最佳延遲時間，獲得一相空間；(F)根據該相空間，獲得一指數；及(G)根據該嵌入維度、該最佳延遲時間，及該指數產生一相關於該受試者的視覺感知程度的評估結果。
