What environmental condition can exacerbate symptoms of blepharitis?

Low humidity can exacerbate symptoms of blepharitis because it contributes to dryness in the eyes and surrounding tissues. This condition often involves inflammation of the eyelids and can be aggravated by environmental factors that lead to further dryness and irritation. In a low-humidity environment, the moisture in the air is reduced, leading to increased evaporation of tears and discomfort. This could result in symptoms such as redness, itching, and irritation of the eyelids, making the condition feel more pronounced.

In contrast, high humidity may provide more moisture in the air, which could potentially alleviate dryness and help in managing the symptoms of blepharitis. Bright light exposure and windy conditions can also cause discomfort for individuals with blepharitis, but they are not as directly related to the exacerbation of symptoms as low humidity is. Overall, maintaining a comfortable humidity level can contribute to better ocular health and symptom management for those experiencing blepharitis.