Why does my 4-year-old child often keep their eyes half open after falling asleep at night?

Patient's question:

Age
Detailed medical condition and consultation purpose: My child often sleeps with half-closed eyes at night and is very sensitive to light. What could be the reason?
Duration of the current illness:
Medical history: This phenomenon has been present since birth. Some doctors said it would improve as the child grows, but it hasn't changed much so far.

Doctor's answer:

It's not a big problem. It might be an issue with the development of the levator palpebrae superioris muscle. You can just apply eye drops like erythromycin or gentamicin for inflammation on a regular basis. The main thing is to avoid dry eyes, which can lead to conjunctivitis. If it's still not resolved after the age of 15, surgery can be done to fix it.