Nasolacrimal drainage system obstruction after orbital decompression.

Area of Science:

• Ophthalmology
• Otorhinolaryngology
• Surgical Complications

Background:

• Dysthyroid ophthalmopathy often requires surgical intervention, including orbital decompression.
• Transantral ethmoidal orbital decompression is a common surgical approach.
• Potential complications of orbital decompression need thorough investigation.

Purpose of the Study:

• To investigate the incidence and characteristics of epiphora following transantral ethmoidal orbital decompression.
• To identify the underlying causes of delayed epiphora in patients with dysthyroid ophthalmopathy.

Main Methods:

• Retrospective review of 123 orbital decompression cases in 63 patients with dysthyroid ophthalmopathy.
• Analysis of 90 transantral ethmoidal orbital decompression procedures.
• Assessment of patient records for the onset and nature of epiphora.

Main Results:

• 16% (14 of 90) of transantral ethmoidal orbital decompression cases developed epiphora.
• Epiphora onset ranged from 11 to 18 months post-surgery.
• All affected patients exhibited obstruction distal to the common internal punctum, indicating nasolacrimal duct involvement.

Conclusions:

• Transantral ethmoidal orbital decompression may lead to delayed epiphora.
• Progressive cicatricial obstruction of the nasolacrimal drainage system is the likely cause.
• Damage to adjacent tissues during surgery may contribute to scarring and subsequent tear duct obstruction.