A: Coaxial illumination means the light source is aligned along the same axis as the observer's viewing path. In OPH surgery, this is critical because it ensures the operative field, even deep inside the eye, is **brightly and uniformly illuminated** without producing shadows caused by instruments, allowing for clear visualization of the fundus and anterior chamber.

A: Ocular movements are incredibly small and sensitive. Motorized fine focusing allows the surgeon to make minute adjustments to the focal plane using foot pedals or hand controls, maintaining a sharp image **without having to move their hands** away from the delicate instruments within the eye, thus maximizing stability and precision.

A: Yes. The Ultimate OPH Microscope typically includes a **Trinocular port or an integrated Beam Splitter**. This allows for the attachment of an assistant's binocular tube or a high-definition camera, enabling a second observer (trainee) to view the surgery simultaneously or allowing the entire procedure to be recorded for didactic purposes.

A: A **Green filter** (often switchable) is frequently used in OPH surgery. This filter enhances the contrast of blood vessels against the background tissue, making delicate retinal procedures and vascular assessments much clearer and easier to perform.