Which drainage pattern differentiates bacterial conjunctivitis from viral or allergic conjunctivitis?

Which drainage pattern differentiates bacterial conjunctivitis from viral or allergic conjunctivitis?

• A. Bacterial conjunctivitis has purulent drainage, while viral or allergic conjunctivitis has watery drainage
• B. Bacterial conjunctivitis has watery drainage, while viral or allergic conjunctivitis has purulent drainage
• C. Both have purulent drainage
• D. Both have watery drainage

Answer: (A)

The main idea tested is how the type of eye drainage helps differentiate forms of conjunctivitis. Bacterial conjunctivitis typically produces purulent drainage that is thick and may crust the lashes, especially in the morning. Viral conjunctivitis and allergic conjunctivitis usually have watery drainage, with viral also often showing tearing and a watery mucous feel, while allergic conjunctivitis brings itching and redness with watery to stringy discharge. Thus, the statement that bacterial conjunctivitis has purulent drainage while viral or allergic conjunctivitis has watery drainage best fits the common patterns seen in practice, making it the most accurate choice.

The main idea tested is how the type of eye drainage helps differentiate forms of conjunctivitis. Bacterial conjunctivitis typically produces purulent drainage that is thick and may crust the lashes, especially in the morning. Viral conjunctivitis and allergic conjunctivitis usually have watery drainage, with viral also often showing tearing and a watery mucous feel, while allergic conjunctivitis brings itching and redness with watery to stringy discharge.

Thus, the statement that bacterial conjunctivitis has purulent drainage while viral or allergic conjunctivitis has watery drainage best fits the common patterns seen in practice, making it the most accurate choice.