What is the purpose of the Dilation and Irrigation (D&I) procedure 1-2 weeks after dacryocystitis?

What is the purpose of the Dilation and Irrigation (D&I) procedure 1-2 weeks after dacryocystitis?

• A. To flush out the blockage and prevent recurrence
• B. To dilate the pupil
• C. To remove the lacrimal gland
• D. To administer antibiotic directly

Answer: (A)

Focusing on this procedure after an episode of dacryocystitis, the main goal is to clear the blocked tear drainage pathway. Dilation and irrigation mechanically flushes the lacrimal system by widening the punctum and canaliculi and then washing saline through the canaliculi into the lacrimal sac. This removes crusts, mucus, and inspissated material that are blocking drainage, helping restore patency and reduce the chance of recurrent infection. The timing—1 to 2 weeks after the infection has cooled—lets the eye recover from the acute inflammation so the procedure is safer and more reliable, and it also provides a chance to assess whether the drainage system remains obstructed and to plan further management if needed. Why the other ideas aren’t the primary purpose: dilating the pupil isn’t what this procedure targets, since dilation here is about the tear drainage openings, not the eye’s pupil. Removing the lacrimal gland is a different surgical intervention with a different goal. Administering antibiotic directly isn’t the central aim of D&I, though antibiotics may be used separately or post-procedure; the core purpose of D&I is to clear the blockage and improve drainage.

Focusing on this procedure after an episode of dacryocystitis, the main goal is to clear the blocked tear drainage pathway. Dilation and irrigation mechanically flushes the lacrimal system by widening the punctum and canaliculi and then washing saline through the canaliculi into the lacrimal sac. This removes crusts, mucus, and inspissated material that are blocking drainage, helping restore patency and reduce the chance of recurrent infection. The timing—1 to 2 weeks after the infection has cooled—lets the eye recover from the acute inflammation so the procedure is safer and more reliable, and it also provides a chance to assess whether the drainage system remains obstructed and to plan further management if needed.

Why the other ideas aren’t the primary purpose: dilating the pupil isn’t what this procedure targets, since dilation here is about the tear drainage openings, not the eye’s pupil. Removing the lacrimal gland is a different surgical intervention with a different goal. Administering antibiotic directly isn’t the central aim of D&I, though antibiotics may be used separately or post-procedure; the core purpose of D&I is to clear the blockage and improve drainage.