Which of the following can be a complication of a tropia?

Diplopia, also known as double vision, is a common complication associated with tropia, which is the term used to describe a misalignment of the eyes. In individuals with tropia, one eye may focus on an object while the other is misaligned, leading to conflicting visual information being sent to the brain. This discrepancy can result in the perception of two images instead of one, hence causing diplopia.

In broader terms, tropia can develop due to various underlying conditions that affect eye muscle control, neurological function, or refractive errors, which may also lead to other visual complications. However, diplopia directly results from the misalignment inherent in tropia, making it a significant and well-recognized outcome of this condition.

Other options like color blindness, presbyopia, and myopia, while they relate to vision, do not stem from the eye misalignment characteristic of tropia. Instead, they are conditions that involve different aspects of visual function or ocular health.