The two primary illumination sources on your microscope are coaxial and paraxial. We have previously explained the differences in the lighting to optimize visibility during cataract surgery.
In this case shown here, we have an expert surgeon who is able to adjust the microscope lighting in order to increase the red reflex and improve visibility for the creation of the capsulorhexis. This video also shows where your skills can be after completing 3000 cataract surgeries.
click to learn from this great surgical pearl and see where your skills could be: