| http://www.w3.org/ns/prov#value | - Of least interest to children are lens and frame materials.On the other hand, for parents functionality and durability are the number-one concern in selecting eyewear for their children, indicated by 95.1 percent of those surveyed, followed by lens materials, 70.6 percent; eye shapes, 58 percent; and frame materials, 41.3 percent.
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