VuMax II Ultrasound Biomicroscopy (UBM) – for high resolution eye imaging
The Erdey Searcy Eye Group has the distinction of being one of the few practices in Ohio that has aquired this important UBM technology! High Frequency Ultrasound imaging of the eye has many uses in an Ophthalmology office.
One very important application of this technology is in our busy Implantable Contact Lens (Visian ICL™) practice. The UBM is used to aquire an actual image and measurement of the length of the eye’s ciliary sulcus, the length of the space the Visian ICL will occupy once implanted. Knowing the actual sulcus to sulcus measurement allows the surgeon to better select the length of the Visian ICL that should be used to achieve a proper ICL vault. This is like knowing a shoe’s size before putting your foot in it. If you only had an estimate of the shoe’s size, you might find it to be too small (or large) once you slipped your foot in it. If the cilary sulcus diameter is underestimated, the implanted ICL may be too long for that eye and may need to be removed. Thankfully, this is an uncommon occurrence, even using the established measuring method, however it is our goal to reduce this potential problem to near zero in our practice. The estabished measuring method makes an assumption that the ciliary sulcus diameter is proportional to a measurement taken on the outside of the eye of the cornea (limbus to limbus diameter). A recent study using limbus to limbus measurement vs. VuMax II UBM imaging found 34% of eyes would have received a different size ICL if UBM had been used! At the Erdey Searcy Eye Group, all Visian ICL patients now have their eye modeled with UBM as part of their pre-operative evaluation.
Dr. Erdey also believes that measurement of the diameter of the capsular bag may better predict if a Crystalens® Intraocular lens will adequately fit once implanted. Erdey Searcy Eye Group continues to study this tool for this application.