Can I also measure patients with staphyloma (protrusion of sclera) precisely?
Yes. It is just these eyes that often cannot be measured reliably and accurately by ultrasound, where the IOLMaster achieves clearly better results. This is due to the measuring principle that simulates the normal process of vision—measurement along the visual axis at a small measuring area. As staphylomas (posterior) cannot be exactly measured by means of ultrasound A scans, additionally a B scan is necessary, if a staphyloma is suspected. As a rule, this is not done, thus resulting in erroneous results. Using the optical method, measurements are automatically correct. In this way, gravely misfitted IOLs will not occur. In a lecture at the DGII 2000 (German-speaking Society for Intraocular Lens Implantation) in Luzern/Switzerland, B. Lege (University Eye Hospital, Wuerzburg/Germany) reported a case where a misfit of about 5D was avoided by optical measurement. Contrary to what is often assumed, irregular shapes of the eye’s fundus exist not only with long eyes, but also with short eye
