To analyze the binocular vision and accommodation function of asthenopia patients, to understand the causes of asthenopia and provide theoretical basis for the prevention and treatment of asthenopia.

A retrospective analysis was made for 84 cases of asthenopia diagnosed in our hospital from February 2015 to October 2016, including 43 males and 41 females. The age of subjects ranged from 8 to 40 years, with average age of 25±3.6 years. Each patient underwent routine ophthalmologic examination, binocular vision and accommodative function examination. Results were statistically analyzed.

The proportion of the exophoria was the highest, accounting for 25% of the total abnormal ratio. Binomial distribution was used to compare the phoria in distance and near. The difference between the esophoria and exophoria in distance was not statistically significant(P>0.05). The difference between the exohporia and exophoria in near was statistically significant(P<0.05). Patients with exophoria were more than patients with esophoria in near. The proportion of binocular accommodative infacility was highest in accommodative disorders, accounting for 36.9% of the total abnormal ratio. Insufficiency had the highest proportion in the total vergence abnormalities, with abnormal ratio of 35.7%.

The main factors that lead to asthenopia are near exophoria, binocular accommodative infacility and convergence insufficiency.

Asthenopia; Binocular visual function; Accommodative function