How often do vision plans typically cover lenses under their benefits?

Many vision plans commonly cover lenses every 12 to 24 months, which aligns with option B. This frequency accommodates the typical changes in a person's vision, allowing for regular updates to their eyewear as needed. Annual coverage for lenses is a standard practice as well, but the range of 12 to 24 months provides flexibility for those who might not need new lenses every year due to stability in their vision.

In contrast, covering lenses every 6 months may be excessive for many individuals, while a 5-year interval would not meet the average consumer's needs for updated vision correction, given that vision can change more frequently than that. Thus, the 12 to 24 month schedule balances the needs of patients with the practicalities of cost management in the health insurance context.