Short answer
Kittens are born with their eyes closed. Most open their eyes somewhere around 7 to 10 days of age, and the range is often given as roughly 2 to 14 days, with both eyes usually open by about two weeks. It is common for one eye to open a day or so before the other.
Kitten eye development timeline
These are typical ranges, not strict deadlines.
- Birth to about a week: Eyes are sealed. Newborns find their mother mainly through smell and touch and spend most of their time nursing and sleeping.
- Around 7 to 10 days: Eyelids begin to separate, often starting as small slits.
- Around 10 to 14 days: Eyes are usually fully open. Vision is blurry at first, and kittens mostly sense light and movement.
- About 3 weeks: Kittens become more alert, start to follow movement, and begin to explore.
- By about 6 to 8 weeks: Vision is much more developed, and kittens are playing and pouncing.
What a 2-week-old kitten looks like
At two weeks, kittens are usually still small and wobbly, with eyes open or opening, and ears that are starting to unfold. They still depend on their mother or a caregiver for warmth, feeding, and stimulation to go to the toilet if the mother is not present. They are not yet steady walkers. Their eyes tend to look blue and cloudy-bright.
Eye color changes
Kittens’ eyes generally start out blue regardless of what their adult color will be. The permanent color develops gradually over the first couple of months as pigment builds up, so the final color may not be clear until around 8 to 12 weeks, sometimes later.
Caring for newborn kitten eyes
- Never force the eyes open. Opening them early can damage the eye or lead to infection. Let them open naturally.
- Keep the nest warm, calm, and dim. Very bright light can be uncomfortable for new eyes.
- Keep the nest clean. Dirty bedding can irritate eyes and spread germs.
- Wash your hands before handling newborns.
- If a mother cat is present, she will usually do most of the care. Interfere as little as possible.
If you are caring for orphaned kittens, ask a veterinarian or rescue for guidance on feeding and warmth. Our guide to how to foster a cat explains how rescues can help support people raising kittens.
When to call a vet
Contact a veterinarian promptly if you notice:
- Eyes still closed well after about two weeks
- Swollen, bulging, or puffy eyelids, including eyelids that look swollen before they open
- Thick yellow or green discharge (see what eye discharge color means), or crusts sealing the eyes
- Red, cloudy, or squinting eyes
- A kitten that is weak, cold, not nursing, or has trouble breathing along with eye problems
Do not try to pry apart stuck eyelids yourself. A vet can show you how to clean them safely if needed. Eye infections in very young kittens can become serious quickly; see cat runny eye for common causes of watery or crusty eyes.
Using eye opening to estimate age
Eye status is one clue to a kitten’s age. Closed eyes usually suggest a kitten under about a week or so, and open eyes with folded ears suggest roughly one to two weeks or older. Other clues include weight, teeth, and the ability to walk. Because kittens vary, a veterinarian is the best source for an accurate age estimate.
FAQ
How can you tell how old a kitten is?
Look at eyes, ears, teeth, mobility, and weight. Closed eyes point to the first week or so, while baby teeth appearing and steady walking point to several weeks. A veterinarian can narrow this down.
What is the 3-3-3 rule for kittens?
The 3-3-3 rule is usually used for adopted cats. It describes about 3 days to decompress, 3 weeks to settle into a routine, and 3 months to feel at home. It is not about eye development.
What do 2-week-old kittens look like?
They are tiny and fragile, with eyes open or just opening and ears beginning to unfold. They may be wobbly and still need a lot of warmth and feeding.
Can you tell if a kitten will be a big cat?
Not reliably at this age. Genetics, breed, and nutrition all play a role, and a veterinarian can track growth over time.