Which of the following is a common symptom of cataracts?

The presence of double vision is a common symptom associated with cataracts due to the opacification of the lens, which can lead to distorted or blurred vision. As the cataract progresses, it may cause light to scatter, resulting in visual disturbances such as double vision. This symptom can manifest at different stages of cataract development and is often experienced alongside other visual impairments.

While other symptoms like increased contrast sensitivity, night blindness, and severe itching of the eyes might be associated with various ocular conditions, they are not typically indicative of cataract formation. Increased contrast sensitivity can often diminish as cataracts progress, and although night blindness can occur, it is more commonly linked to other conditions. Severe itching is not a symptom of cataracts; instead, it is usually related to allergies or inflammatory eye conditions.