角膜矯形鏡(OK鏡)的驗配程序

筆者於前一篇網誌已羅列出現今有科研根據而有效地減慢兒童近視加深的方法。今篇網誌我會更深入地說明驗配角膜矯形鏡的驗配程序和注意事項。

角膜矯形鏡的驗配程序:

  1. 眼科視光師會為驗配者進行全面的角膜矯形術評估,當中包括角膜和淚水檢查、角膜地形圖檢查及為驗配者試戴角膜矯形鏡。透過檢查,眼科視光師會評估驗配者(尤其是兒童)在心理和身理上是否適合進行角膜矯形術。
  2. 完成評估後,如眼科視光師認為驗配者適合配戴角膜矯形鏡,便會與家長或配戴者簽署同議書。此時,眼科視光師會選訂矯視鏡片。大部份角膜矯形鏡都要從外國訂製,一般要兩星期的時間才能取得鏡片。
  3. 在訂製鏡片期間,配戴者需學習戴上和除下隱形眼鏡及清潔護理矯視鏡片的技巧。學習時間因人而異,有些小朋友能在兩至三堂便能掌握技巧,但有些較為緊張的小朋友需要五至六堂甚或更長的時間去掌握技巧。
  4. 在拿取角膜矯形鏡片前,配戴者需帶上新訂製的鏡片作最後的檢查,如一切正常,便能取走鏡片。
  5. 由於角膜矯形鏡是在晚間睡覺時配戴,風險較配戴日間隱形眼鏡為高,所以需覆診的次數(尤其是剛剛開始配帶)會較為頻密。配戴者需要在配戴鏡片後的第一個早上(起床後的兩小時內)作覆診,若第一次覆診後配戴結果良好,下一次覆診將在1週後、2週後、1個月後,然後每3-4個月進行。
  6. 角膜矯形鏡需要每年更換,因為鏡片每日都需要配戴和清洗,鏡片的弧度有機會因此而改變,影響矯視效果。再者矯視鏡上會積存一些不能完全清洗的沉積物,它們不但會減低角膜矯形鏡的透氣度,還會增加角膜感染的風險。所以定期每年換鏡是必需的。

配戴角膜矯形鏡的注意事項:

  1. 在配戴角膜矯形鏡的過程中,如配戴者出現眼紅、眼痛、畏光和流過量的眼淚水的症狀,就應立即停止配戴矯視鏡,並立刻到為你驗配角膜矯形鏡的眼科視光師作檢查。
  2. 若配戴者在配戴期間出現發燒感冒,或需要前往一些不能容易地取得乾淨食水洗手的地方,便應暫時停止配戴矯視鏡,並通知你的眼科視光師。
  3. 如小朋友不能自行清潔矯視鏡片,而父母或監護人又未能代勞。這個情況下,我並不建議配帶角膜矯形鏡。
  4. 最後,若家長想為子女驗配角膜矯形鏡,應選擇一些有相關學歷及資歷而細心的眼科視光師作跟進,家長亦要知道聽從眼科視光師指示和建議的重要性。這樣便能安心地配戴角膜矯形鏡。

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

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