Which property is associated with a lens manufactured by spin casting?

The property associated with a lens manufactured by spin casting is uniform thickness across the lens. Spin casting is a process that allows for precise control over the thickness of the material as it is spun and shaped. This technique leads to consistent thickness, which is critical for maintaining optical performance and ensuring that the lens fits properly on the eye.

In contrast, increased elasticity might be a consideration in certain lens designs, but it isn't a defining trait of spin-cast lenses. The claim of less predictable fit is inconsistent with the manufacturing process, as spin casting typically promotes uniformity leading to a more predictable fit. Reduced oxygen permeability is not a property inherently linked to spin casting either, as the material chosen for the lens dictates that characteristic rather than the manufacturing method itself.

In summary, the correct answer emphasizes the benefits of spin casting regarding the consistency and quality of the lens, making uniform thickness a defining property of lenses produced through this method.