What is the purpose of using polishing compound and radius tools in lens fitting?

Using polishing compound and radius tools in lens fitting is primarily focused on refining the lens shape to achieve a better fit. This process involves adjusting the curvature and surface of the lens to ensure that it aligns perfectly with the contours of the eye. A well-fitted lens enhances visual acuity, comfort, and overall success in lens wear.

Refining the lens shape is crucial because every individual's eye is unique, and slight adjustments can make a significant difference in how well the lens performs. By using polishing compounds and radius tools, practitioners can make precise modifications, which ultimately improves the lens's performance and comfort.

The other options do not accurately describe the role of polishing compounds and radius tools. Creating additional surface area is not a primary goal in the fitting process; instead, it's about achieving the right curvature. Applying protective coatings is a different step in the lens manufacturing process that is unrelated to the physical fitting of the lenses. Cleaning the lenses is also a separate task, not involving the shaping or polishing of the lens to fit properly.