Which of the following is an eye condition linked to sun exposure?

Photokeratitis is an acute condition resulting from excessive exposure to ultraviolet (UV) light, which can occur during intense sunlight or from artificial sources such as welding. It is essentially a sunburn of the cornea and can cause symptoms like pain, redness, tearing, and blurred vision. This condition serves as a reminder of the importance of protecting the eyes from UV light, as overexposure can lead to significant discomfort and, in some cases, long-term damage.

Strabismus is primarily a condition related to eye muscle control and is not directly influenced by sun exposure. A domestic infection refers to infections that typically occur in the home environment and do not have a specific link to sun exposure. Color blindness is largely a genetic condition affecting the perception of colors and is unrelated to UV exposure or sunlight. Thus, photokeratitis stands out as the condition directly associated with sun exposure, making it the correct answer.