Method and system for treating of visual impairment associated with misalignment between eyes of a patient is described. The graphical user interface allows a user to adjust the colorspace of the pixels in the image. An open irrigation ablation catheter includes an isolated manifold that isolates the positioning magnet from contact with irrigation fluid to prevent corrosion. The extended piece is longitudinally inclined toward the locking arm so that the extended piece can slidingly contact the inner wall of the insertion space. As a result, the resolution of adjacent channels varies very little and block dimming between channels can be resolved. At the same time, buyers are allowed to research the market without actually submitting RFQs to the electronic marketplace.