Having your child's eyes checked is one of the annual back-to-school rituals. Costco Optical Centers can help with exams, glasses, frames and blue light lenses.

BLUE LIGHT from sunlight helps us regulate our sleep-wake cycles and boosts attention, reaction times and mood.

Too much blue light, however, from smartphones, computers, television screens and LED lighting, can mess with our sleep, and has been linked to eye issues from blurry vision and eyestrain to macular degeneration and cataracts.

Costco Optical Centers offer options to filter blue light on all lenses to help reduce the exposure of harmful blue light while letting in the beneficial blue light.