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Abstract ID: 24-155
Effect of mite infection on primary acquired nasolacrimal duct obstruction
Caiwen Xiao
Purpose
The aim of this study was to investigate the effect of ocular mite infection on patients with primary acquired nasolacrimal duct obstruction in different age groups: young (20- 40 years old) , middle-aged (40-60 years old) and elderly (≥60 years old).
Methods
The clinical data of 500 patients (621 eyes) with primary acquired nasolacrimal duct obstruction in the Department of Ophthalmology of Shanghai Ninth People’s Hospital from January 2018 to December 2023 were retrospectively analyzed to statistically correlate the correlation of helminth mite infections and their counts with the type of lacrimal duct obstruction in each age group.
Results
Of the 621 eyes, 46.7% had helminthic mite infestation, with a mean of 2.19 ± 1.12 mites per four eyelashes in one eye. Of the eyes with mite infestation, 62.8% had complete tear duct obstruction (p=0.045), suggesting a correlation between severity of tear duct obstruction and mite infection. However, there was no significant difference between the rate of mite infection and the age of patients with tear duct obstruction.
Conclusion
There was a significant correlation between the type of primary acquired nasolacrimal duct obstruction and mite infection, but there was no significant correlation with the age of the patients, suggesting that mite infection may also be one of the causative factors of lacrimal duct obstruction, and that the treatment of mites may alleviate the condition of lacrimal duct obstruction to a certain extent.
Additional Authors
– Shanghai Ninth People’s Hospital Afflicted to Shanghai Jiao Tong University School of Medicine