For best results, insert a test strip in the holder as an aid to placement of the dots or U-shaped ridge. T-shirt paint is inexpensive and is available at most craft and fabric stores. Although a full spectrum of colors is available, bright, contrasty colors like orange may aid in low vision situations. Some paints feel too rubbery. You may have to experiment.
Several vendors offer commercial alternatives to modifying the test strip holder.
One slips over the LifeScan meter, and the other attaches directly to the test strip holder. Both devices aid in proper finger placement, and serve to guide the drop of blood more surely to the test strip. A Sure Drop made for the One Touch II will not fit the Profile, and vice versa. The unit for the Profile appears well-made and easy to use. The same device fits Basic, One Touch II, and Profile.