本研究在隱形眼鏡上進行表面摩擦係數的分析，用以建立一套分析模式來獲取每款
隱形眼鏡的表面摩擦係數。利用奈米壓痕中的刮痕模式來獲取摩擦係數，以奈米壓痕來
模擬眼皮與隱形眼鏡之前的摩擦。在分析摩擦係數過程中，為了更符合與人體配戴的舒
適感，會分別分析從新的樣品開封後，和開封後放置 1、2、3 個小時，目的是為了分析
水分散失與摩擦係數之間的關係。本實驗利用奈米壓痕分析儀中的刮痕模式建立一套可
測量隱形眼鏡摩擦係數的方法，進而提供產品發展指標，並有助於進行產品優化。
此分析過程，會分成 3 個階段進行分析；依序分別為：初步測試與可行性評估、最
佳化測試、標準化測試方法。初步測試與可行性評估：會分析隱形眼鏡是否有效使用奈
米壓痕進行量測，且起初會使用 4 款隱形眼鏡進行分析，以及參數上的選擇；最佳化測
試：會使用 10 款市售隱形眼鏡進行分析，並且使用多種速度及正向力，比較之間的差
異以及現象；標準化測試方法：由最佳化測試中發現，剛拆封時的隱形眼鏡表面上的水
分，會影響摩擦係數之穩定性，所以，會將剛拆封之隱形眼鏡放置一段時間後，再進行
量測，靜置時間會以每 20 分鐘為單位測量；此外，也會在靜置每 20 分鐘後添加人工淚
液，與未添加人工淚液比較差異。
最終，由初步測試與可行性評估可知，隱形眼鏡會因為每款軟硬度的不同，導致每
款隱形眼鏡所能使用的正向力也不同；在最佳化測試中，使用速度為 0.33μm/s 之摩擦
係數最為不穩定，其原因很有可能受到隱形眼鏡含水量的影響，以及剛拆封後表面殘有
水分，而導致測量摩擦係數較為不穩定；最後由標準化測試方法驗證，剛拆封後的隱形
眼鏡，明顯地會造成摩擦係數之穩定度，而且會隨著靜置時間的增加，穩定度也隨之提
高。由於，在測量在同一片的隱形眼鏡上，摩擦係數差異太大是不可行的，所以，使用
此方法，可以有效地在奈米壓痕上測量出穩定之摩擦係數，以方便進行產品之比較及優
化。

In this study, the coefficient of friction for contact lenses was analyzed to establish analysis
methods to obtain the surface coefficient of friction. Use the scratch mode in nanoindenter to obtain
the coefficient of friction, and simulate the friction between the eyelids and the contact lens. In the
process of analyzing, in order to be more comfortable with the human feeling, the new samples will
be analyzed separately for after opening 1, 2, 3 hours, the purpose is to analyze the water loss
condition. This experiment uses the scratch mode in the nanoindenter to establish methods that can
measure the coefficient of friction, thereby providing product development indicators and helping
to optimize products.
This analysis will be divided into three stages. Preliminary test and feasibility evaluation
will analyze whether contact lenses can be measured using nanoindenter and initially will use
4 contact lenses for analysis as well as the selection of parameters. Optimization test will use
10 commercially sample and test 3 speed and a lot of normal force to comparison differences.
Standardized test will be placed for a period of time because water content on the contact lens
surface obviously affect coefficient of friction. Therefore, the he resting time will be measured in
units of 20 minutes in addition, artificial tears will be added every 20 minutes and compared with
no artificial tears.
Finally, can be known that each contact lens have to use different normal force because
the contact lens have different hardness from the preliminary test and feasibility evaluation. In
Optimization test, the use speed is 0.33μm/s that is the most unstable because of the content
lens just after unpacking. To verify unpacked is most effect reason by the standardized test that
obviously cause the stability of the coefficient of friction and the stability will increase as the
placing time. Since it is not feasible to measure the coefficient of friction on the same contact lens
with difference, this method can be used to measure the stable coefficient of friction on the
nanoindenter to facilitate product comparison and optimization.

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