Tehrani Mana, Schäfer Stefanie, Dick H Burkhard
Department of Ophthalmology, Johannes Gutenberg-University, Mainz, Germany.
J Cataract Refract Surg. 2004 Nov;30(11):2415-9. doi: 10.1016/j.jcrs.2004.03.036.
To evaluate the quality of keratectomy specimens created with the Amadeus microkeratome (AMO) using scanning electron microscopy (SEM).
Johannes Gutenberg-University Hospital, Department of Ophthalmology, Mainz, and the Department of Anatomy, Justus Liebig-University, Giessen, Germany.
Corneal cuts were performed in freshly enucleated pig eyes using the Amadeus microkeratome with 9 combinations of oscillation rate and head-advance speed. For the cutting trials, oscillation rates of 8000, 13,000, and 18,000 rpm and head-advance speeds of 1.0, 2.5, and 4.0 mm/s were chosen. Fifty-four eyes were included, resulting in 9 groups of 6 eyes for each configuration. The surfaces and edges of the flaps were examined using SEM.
At fixed oscillation rates, an increase in head-advance speed led to lower quality cuts, higher surface roughness, and irregular cut edges. At fixed head-advance speeds, an increase in oscillation rates improved the cut quality, resulting in smoother surface characteristics.
Smooth and regular surfaces and cut edges can be achieved by choosing high oscillation rates and low head-advance speeds. Microkeratomes that enable the user to adjust the oscillation rate and head-advance speed can be used to maximize surface smoothness and improve customized refractive surgery.
使用扫描电子显微镜（SEM）评估用阿玛迪斯微型角膜刀（AMO）制作的角膜切除术标本的质量。
德国美因茨约翰内斯·古腾堡大学医院眼科以及吉森尤斯图斯·李比希大学解剖学系。
使用阿玛迪斯微型角膜刀对新鲜摘除的猪眼进行角膜切割，采用9种振荡速率和刀头前进速度的组合。在切割试验中，选择8000、13000和18000转/分钟的振荡速率以及1.0、2.5和4.0毫米/秒的刀头前进速度。共纳入54只眼，每种配置形成9组，每组6只眼。使用SEM检查瓣片的表面和边缘。
在固定振荡速率下，刀头前进速度增加会导致切割质量下降、表面粗糙度增加和切割边缘不规则。在固定刀头前进速度下，振荡速率增加可提高切割质量，使表面特征更光滑。
通过选择高振荡速率和低刀头前进速度，可以实现光滑且规则的表面和切割边缘。能够让使用者调节振荡速率和刀头前进速度的微型角膜刀可用于最大化表面光滑度并改善个性化屈光手术。
