ABSTRACT
Purpose@#To evaluate the relationship between the position and direction of a silicone tube in the nasal cavity after silicone tube intubation and clinical features. @*Methods@#This study included 70 eyes of 52 patients who were diagnosed with nasolacrimal duct obstruction and had silicone intubation surgery. The position and direction of the silicone tube were compared after tube intubation and before extubation. An intranasal swap culture was performed before tube intubation, and the removed silicone tubes were cultured. @*Results@#The length of the silicone tube decreased from 8.7 ± 3.1 mm after intubation to 7.3 ± 3.1 mm before extubation, and the direction of the tube moved backward in the nasal cavity (p < 0.05). The bacterial culture rate changed from 94.3% before intubation to 75.7% before extubation. The most common Gram-positive bacteria (both preoperative and postoperative) was coagulase- negative Staphylococcus aureus. The most common Gram-negative bacteria were converted from Klebsiella aerogenes to Stenotrophomonas maltophilia. The fungal culture rate changed from 7.1% to 51.4%, and the culture rate increased when the silicone tube direction was moved backward (p < 0.05). The length and direction of the silicone tubes were not correlated with clinical symptoms or changes in eyelid height. @*Conclusions@#The length of the silicone tube in the nasal cavity decreased, and the tube tended to move in a posterior direction after silicone tube intubation. Considering the increase in the intra-nasal fungal culture rate, it is better to place the silicone tube in the anterior part of the nasal cavity from the inferior meatus. To clarify further the fungal infection and its clinical findings, a study of cultures with respect to location in the lacrimal system would be required.
ABSTRACT
PURPOSE: To report a patient with asteroid hyalosis, which induced reduction of the visual acuity after cataract surgery.CASE SUMMARY: A 79-year-old female with no ophthalmic history visited our clinic with decreased vision. Her best-corrected visual acuity in both eyes was 20/100 in the right eye and 20/60 in the left eye. She had senile cataract in both eyes, and asteroid hyalosis in the left eye. After cataract surgery, her visual acuity in the left eye decreased to finger count. There were no specific findings that could have caused the visual disturbance, except dense asteroid bodies on fundus examination. After removal of the asteroid bodies by vitrectomy, the best-corrected visual acuity of the left eye recovered to 20/20.CONCLUSIONS: In patients with asteroid hyalosis, it is possible that decreased vision may be affected by changes of asteroid body properties in the vitreous gel after cataract surgery. The vision should improve after vitreous surgery.