If you're looking for a vertex distance conversion charts, you've found the motherload. Here you will find vertex distance conversion charts for single powers (i.e Sphere power only), as well as for astigmatism (Sphere + Cylinder combinations). Pdf versions of all the charts shown on this page are available on The Lost Contact's Downloads page. … Continue reading Vertex Distance Conversion Chart Motherload
How To Convert A Glasses Prescription To Contact Lenses: Astigmatism
In the previous lesson: "How To Convert A Glasses Prescription to Contact Lenses", I covered only situations that did not involve any astigmatism correction. In this lesson, I will only be discussing how to convert a glasses prescription to contact lenses when there is astigmatism to deal with. Before I get into it I just … Continue reading How To Convert A Glasses Prescription To Contact Lenses: Astigmatism
How To Convert A Glasses Prescription To Contact Lenses
Now that you know who can or can't wear contact lenses, it's time to get the contact lens fitting started. The first step is to determine the power of contact lenses needed for your patient. To do this so it is crucial to know how to convert a glasses prescription to contact lenses. Is A … Continue reading How To Convert A Glasses Prescription To Contact Lenses