The reasons and solutions for kitten’s eyes that are more than ten days old are stuck with eye droppings:

Getting angry. Change the female cat’s diet structure, pay attention to light food, and ensure that the female cat has sufficient water sources.

Dust gets into eyes. Clean the kitten's eyes with saline or a pet-specific eye wash.

Acute conjunctivitis. First clean up the secretions around the cat's eyes, then use cleaning fluid to rinse the eyes to thoroughly rinse away the secretions. After rinsing and cleaning, instill anti-inflammatory eye drops every day. If the symptoms are particularly severe, oral medication may be required.

In addition, it may also be caused by the kitten catching a cold or other reasons. Please consult a professional doctor for details.