Visual impairments refer to a range of conditions that affect a person's ability to see clearly. This can include partial sight, where individuals may have some vision but not enough to perform everyday tasks, or complete blindness, where no light perception is present. Common causes of visual impairments include cataracts, glaucoma, and diabetic retinopathy, which can result from aging, medical conditions, or injury. People with visual impairments often use various tools and techniques to navigate their environment. Assistive devices such as canes or guide dogs help enhance mobility and independence. Additionally, technology like screen readers and magnifiers can assist individuals in accessing information and performing tasks, making it easier to participate in daily life.