Light
Glasses refer to a pair of lenses worn in front of the eyes to correct vision problems. They help people see clearly by focusing light onto the retina.
The retina is the innermost layer at the back of the eye that contains cells sensitive to light, converting it into electrical signals.
Visual perception refers to how our brains interpret and make sense of visual information received through our eyes.
Selective attention is the ability to focus on specific stimuli while filtering out irrelevant or less important information.