Garcia-Lledo Magdalena, Feinbaum Claes, Alio Jorge L
VISSUM/ Instituto Oftalmologico de Alicante, Alicante, Spain.
Compr Ophthalmol Update. 2006 Mar-Apr;7(2):47-52.
The treatment of keratoconus can be implemented by the use of spectacle lenses, contact lenses of various kinds, and surgery. In this article, we deal with the procedures of contact lens fitting in patients diagnosed with keratoconus. The different types of specific contact lenses and the methodology of fitting these contact lenses for keratoconus are described. To select a contact lens for the individual patient depends upon the severity of keratoconus and the amount of corneal ectasia. Pending these criteria, a contact lens is chosen, which will give the best visual acuity and tolerance. At present, many designs of special contact lenses exist in oxygen-permeable materials; in addition, other systems, such as piggy-back, SoftPerm, semi-scleral, and scleral contact lens types are used. Contact lens fitting on a conical cornea will smooth out the highly irregular optical surface of the cornea and improve visual acuity considerably. Contact lenses are one of the better solutions to correct refractive errors induced by pathology, and they should be prescribed as soon as the keratoconus is detected to avoid development of amblyopia. The quality and quantity of vision is far better than with spectacle lens correction.
圆锥角膜的治疗可通过使用眼镜镜片、各种隐形眼镜以及手术来实现。在本文中，我们探讨了为被诊断患有圆锥角膜的患者验配隐形眼镜的流程。文中描述了不同类型的特定隐形眼镜以及为圆锥角膜患者验配这些隐形眼镜的方法。为个体患者选择隐形眼镜取决于圆锥角膜的严重程度和角膜扩张的程度。根据这些标准，选择一种能提供最佳视力和耐受性的隐形眼镜。目前，有许多采用透氧材料设计的特殊隐形眼镜；此外，还使用其他系统，如叠戴式、SoftPerm、半巩膜和巩膜接触镜类型。在圆锥角膜上验配隐形眼镜将使高度不规则的角膜光学表面变得平滑，并显著提高视力。隐形眼镜是矫正由病变引起的屈光不正的较好解决方案之一，一旦检测到圆锥角膜就应开具处方，以避免弱视的发展。视力的质量和程度远比眼镜镜片矫正要好。
