However, this is just a general guideline. Some kittens might open their eyes a little earlier or later, depending on factors like:
* Breed: Some breeds, like Persians, tend to open their eyes a bit later.
* Individual kitten: Each kitten develops at its own pace.
* Health: Healthy kittens usually open their eyes within the normal timeframe. If a kitten is sick or malnourished, it might take longer.
If you're worried about a kitten's eye opening, it's best to consult a veterinarian.