To prevent systemic absorption of an eyedrop, which action should be performed after instillation?

To prevent systemic absorption of an eyedrop, which action should be performed after instillation?

• A. Press on the lacrimal duct after drops
• B. Do not touch the lacrimal duct
• C. Rinse with water after administration
• D. Blink rapidly after instillation

Answer: (A)

Blocking drainage at the inner corner of the eye reduces how much medication enters the nasal passages and is absorbed systemically. After instilling an eyedrop, gently press on the lacrimal sac for about 30 seconds. This punctal occlusion minimizes systemic exposure and potential side effects from ophthalmic drugs. Blinking rapidly after instillation can increase tear turnover and spread the drug, while rinsing with water isn’t an effective way to prevent systemic absorption, and simply avoiding contact with the lacrimal duct leaves the drainage pathway open. The pressing action is the best method to limit systemic absorption.

Blocking drainage at the inner corner of the eye reduces how much medication enters the nasal passages and is absorbed systemically. After instilling an eyedrop, gently press on the lacrimal sac for about 30 seconds. This punctal occlusion minimizes systemic exposure and potential side effects from ophthalmic drugs. Blinking rapidly after instillation can increase tear turnover and spread the drug, while rinsing with water isn’t an effective way to prevent systemic absorption, and simply avoiding contact with the lacrimal duct leaves the drainage pathway open. The pressing action is the best method to limit systemic absorption.