Which characteristic is associated with senile cataracts?

Monocular diplopia and glare are commonly associated with senile cataracts due to the way cataracts affect the lens of the eye. As cataracts develop, they cause opacities that scatter light. This scattering results in visual disturbances, including glare, especially when exposed to bright lights or during night driving. Diplopia, or double vision, is also experienced due to the uneven refraction caused by the cloudy lens.

In contrast, the other characteristics do not align with the typical presentation of senile cataracts. For instance, increased night vision is not associated with cataracts, as these typically lead to difficulties seeing in low-light conditions. Decreased sensitivity to light is also not a characteristic of cataracts; instead, people often become more sensitive to light due to glare caused by the cataract. Lastly, improvement in near vision is generally not seen with cataracts, as they usually cause a decline in visual acuity for both near and distant objects due to the clouding of the lens.