**1. Introduction**

Dry eye is a type of disease caused by tear film instability and/or ocular surface damage, which results in eye discomfort and visual dysfunction [1]. The etiology and pathogenesis of dry eye are complicated. Epidemiological studies have shown that there is a positive correlation between pterygium and dry eye [2], and usually accompanied with tear film dysfunction, which is associated with pterygium hyperplasia, irregular, and non-smooth ocular surface. Surgical resection is the main treatment for pterygium which can repair the ocular surface and improve tear film function and reduce dry eye symptoms [3]. It found that different surgical methods of pterygium have different recurrence rates and different tear film function changes [4]. Now, we will summarize the changes of tear film function after different surgical methods of pterygium.
