兒童雙眼視覺 (下)

上一篇網誌,筆者已和大家分享一些顯性雙眼視覺障礙的症狀和處理方法,本篇網誌便會說明一下隱性的雙眼視覺障礙。

隱性的雙眼視覺障礙:

隱性顧名思義是沒有明顯表徵的。尤其在閱讀的時候,患者會出現重影、視力模糊、眼睛容易疲勞、頭痛和流眼淚水等症狀。若小朋友有閱讀困難或較差的學習表現,應咨詢在雙眼視覺檢查方面有更多專門知識的眼科視光師,查明一下是否與隱性雙眼視覺障礙有關。隱性雙眼視覺障礙可再細分為以下三種1:

眼球聚散障礙:

它會使患者不能夠持續地和舒服地專注近距離工作及閱讀。常見的眼球聚散障礙為眼球聚合力不足和眼球聚合力過盛。

眼球調節障礙:

它會使患者不能持續地聚焦在近距離的物件和不能靈活地對不同距離的事物變焦。常見的眼球調節障礙為眼球調節力不足和眼球調節不靈。

眼球運動障礙:

患者的眼球追蹤能力較差,閱讀事經常跳行跳字。常見的眼球運動障礙為眼動機能障礙。

大部份的隱性雙眼視覺障礙都可以透過視覺訓練和光學鏡片來使雙眼視覺機能正常化,家長如發現小朋友有閱讀困難應主動地帶他們進行全面眼科視光檢查,查明一下是否與隱性雙眼視覺障礙有關。

進階雙眼協調檢查:

瑞士寶眼科視光中心的全面眼科視光檢查已包括基本的雙眼協調檢查。如眼科視光師發現有任何雙眼視覺障礙需進一步跟進,他/她便會建議你進行進階雙眼協調檢查作深入的檢查。

註冊眼科視光師(第一部份) 陳家豪


以上護眼資訊由瑞士寶視光中心提供

地址 : 香港新界荃灣海盛路11號 One Midtown 23樓全層

查詢/預約電話 :  +852 2751 8491

網址: www.swisscoat.com.hk


參考文獻:

Scheiman M, Wick B. Clinical Management of Binocular Vision: Heterophoric, Accommodative, and Eye Movement Disorders. 3rd ed. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins; 2008.

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