Period Costs. Period costs are expenses that are easier to attribute to times and accounting periods than actual production processes or finished goods. Typically, managerial accountant want to classify expenses in categories that can improve operations. Manufactures tend to focus on functional classifications.
The amber color of these impact-resistant polycarbonate lenses block short-wavelength blue light and 100% of ultraviolet (UV) light, thus providing additional protection against cataract formation and the development of macular degeneration, while increasing contrast on both sunny and bright hazy days.
Blue Blocker HD Sunglasses with High Definition lenses for golf, driving, cycling and all sports activities with Microfiber Cleaning Case. 4.3 out of 5 stars 45. $15.99 - $20.99. Blue Blocking HD Polarized Sunglasses for Men and Women - Free Microfiber Cleaning Case.