# When Do Kittens Open Their Eyes? Timeline and Care Most kittens begin opening their eyes around 7 to 14 days after birth, and the process usually finishes by about 3 weeks of age. If you are wondering when do cats open their eyes, the short answer is that it happens gradually, one small slit at a time, and kittens cannot see clearly at first. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## Quick Answer - Kittens are born with their eyes closed, and the eyelids typically begin to separate between 7 and 14 days of age. - Both eyes usually finish opening by 2 to 3 weeks, though a slight delay in one eye is common and often normal. - Never force an eyelid open. You can cause serious injury to the cornea. - A small amount of crusty discharge in the first weeks can be cleaned gently with a warm, damp cotton ball. - Call your veterinarian the same day if you see thick yellow or green pus, a swollen or bulging eyelid, or an eye that stays shut while the other one opens. ## When Do Kittens Open Their Eyes? The Normal Timeline Newborn kittens are born blind and deaf. Their eyelids are fused shut, and this protects the developing eye surface while the kitten grows. Over the first two weeks, the eyelids slowly separate. You may notice a tiny crack at the inner corner first, then a wider opening over the next few days. The timeline varies a little from kitten to kitten. Most open their eyes between 7 and 14 days. By the end of the third week, both eyes are usually fully open. Even then, the eyes may look cloudy or blue-gray, and the kitten's vision is still poor. Clear vision develops over the following weeks as the retina and visual pathways mature. Research on visual development shows that before the eyes open, the visual cortex is already active and building early networks [1]. This means a lot of development happens behind those closed lids. Once the eyes open, visual experience starts refining those connections [2]. In other words, the closed-eye period is not wasted time. It is part of normal brain development. If one eye opens a day or two before the other, that is usually fine. If one eye is still completely sealed while the other has been open for several days, have your veterinarian look at it. ## How to Care for a Kitten's Eyes Step by Step ### Step 1: Wash your hands Newborn kittens have weak immune systems. Wash your hands with soap and warm water before touching the face or eyes. Dry them well. ### Step 2: Look, do not touch Check the eyes once or twice a day. You are looking for three things: whether the lids are separating, whether the eye surface looks clear, and whether there is any discharge. Do not pull the lids apart. Do not shine a bright light directly into the eye. ### Step 3: Clean normal crust gently A small amount of dried discharge at the lid margins is common in the first weeks. Moisten a clean cotton ball or soft gauze with warm water. Wipe from the inner corner outward, once, and use a fresh piece for each eye. Never reuse the same cotton ball on both eyes. ### Step 4: Keep the nest clean Change bedding daily. Dust, litter dust, and dirty bedding can irritate newborn eyes. Keep the kitten's area warm and draft-free. ### Step 5: Watch for changes Take a photo each day if you are unsure whether things are improving. A daily photo makes it easier to see subtle swelling or increasing discharge. ### Step 6: Do not use human eye drops or ointments Never put leftover human eye medicine, saline, or herbal drops in a kitten's eye unless your veterinarian prescribed it for that kitten. Some human products contain preservatives or steroids that can harm a kitten's eye. ## Kitten Eye Development Schedule | Age | What You Should See | What to Do | |---|---|---| | Birth to 7 days | Eyelids fully closed, no discharge | Keep the nest clean, handle gently | | 7 to 14 days | Eyelids begin to separate, small slits appear | Watch daily, clean normal crust with warm water | | 14 to 21 days | Both eyes usually open, eyes may look cloudy or blue | Keep lighting soft, continue daily checks | | 3 to 4 weeks | Eyes look clearer, kitten starts tracking movement | Provide safe toys and gentle handling | | 4 to 8 weeks | Vision improves, eyes should look bright and clear | Schedule a wellness exam and discuss vaccines | Kittens can generally leave their mother and littermates once they are weaned, starting at 6 to 7 weeks old [3]. If you are raising an orphan or a foster kitten, plan a veterinary visit around that time. Vaccines usually begin at 2 to 3 months old because maternal immunity from nursing interferes with vaccine response before then [3]. For more on the early weeks, see our guide to [kitten spay timeline](/knowledge/veterinary-medicine/preventive-care/kitten-spay-timeline). ## Signs Something Is Wrong With Your Kitten's Eyes ### Discharge that is not clear or watery A little clear tearing is normal. Thick yellow, green, or gray discharge is not. That kind of discharge usually means infection or inflammation and needs veterinary treatment. ### Swelling of the eyelid A swollen, puffy, or bulging eyelid is a red flag. In young kittens, swelling can trap pus behind a closed lid and damage the cornea. This is painful and can cause lasting vision problems. ### An eye that stays shut If one eye remains sealed while the other has been open for several days, or if both eyes are still shut past 3 weeks, call your veterinarian. There may be an infection, a congenital problem, or a physical reason the lids cannot separate. ### Cloudiness that gets worse Some cloudiness is normal in the first weeks. Cloudiness that increases, or a white or yellow spot on the cornea, needs same-day attention. ### Squinting, pawing, or rubbing Cats in eye pain often hold the head lower and avoid bright light. A study of cats after eye surgery found that a lowered head position was one of the pain behaviors observed before and after procedures [4]. If your kitten squints, rubs the eye, or holds the head down, treat it as a pain sign and call your vet. ### The third eyelid is showing The third eyelid is the thin membrane at the inner corner of the eye. It can slide across when a kitten is sick, dehydrated, or has an eye problem. A persistently visible third eyelid deserves a veterinary exam. Abnormal eyelid position and eyelid hairs can also irritate the eye surface and cause chronic tearing, as seen in a case of a Maine Coon cat with ectopic cilia arising from the third eyelid [5]. For a broader look at eye problems in cats of all ages, read [Cat Eyes: Understanding Feline Vision, Common Eye Problems & Care Tips](/knowledge/veterinary-medicine/symptom-guides/cat-eyes-anatomy-health) and [Cat Eye Discharge: When Should You Worry?](/knowledge/veterinary-medicine/symptom-guides/cat-eye-discharge-when-to-worry). ## Common Mistakes New Kitten Owners Make ### Forcing the eyes open This is the most dangerous mistake. Pulling the lids apart can tear the delicate tissue and scratch the cornea. Let the eyes open on their own. ### Using the wrong cleaner Hydrogen peroxide, alcohol, and human eye drops can burn or damage the eye. Warm water on a clean cotton ball is enough for normal crust. ### Waiting too long with an infected eye Kitten eyes can go from mildly crusty to seriously infected in a day or two. Early treatment is easier, cheaper, and safer for the eye. ### Skipping the first vet visit Even a healthy-looking kitten needs a wellness exam. Your veterinarian can check the eyes, listen to the heart, check for parasites, and set up a vaccine schedule. Keeping kittens away from unvaccinated cats until they have completed their vaccine series is important for disease protection [3]. ### Assuming all kittens open their eyes at the same age Breed, birth weight, and overall health all affect timing. Brachycephalic cats (flat-faced breeds) have different eye anatomy and may be more prone to eye surface problems. A study of healthy adult cats across several breeds found that corneal sensitivity was negatively correlated with body weight, meaning heavier cats tended to have slightly lower corneal sensitivity [6]. That study looked at adults, not newborns, but it shows that eye measurements vary between individual cats. ### Ignoring the mother cat's health If the mother has an eye infection or an upper respiratory infection, she can pass it to her kittens. Have her checked too. ## Supplies and Setup That Matter for Eye Health You do not need much, but a few items make a difference. - Clean cotton balls or soft gauze pads, one per eye per cleaning - Warm water in a small cup, not tap water straight from the faucet if the water is heavily treated - A soft, clean blanket changed daily - A shallow litter box with low-dust litter once the kitten starts using it - A small carrier for vet visits, lined with a clean towel - A notebook or phone album for daily photos Keep the kitten's room free of cigarette smoke, strong cleaners, and aerosol sprays. These irritate the eye surface. Avoid dusty clay litters near very young kittens. If you are also wondering about how well your kitten will eventually see, our article [Can Cats See in the Dark? Feline Vision Explained](/knowledge/veterinary-medicine/behavior/can-cats-see-in-the-dark-feline-vision-explained) covers how feline eyes work in low light. ## Limitations and When to Contact a Veterinarian Call your veterinarian the same day if you see any of these: - Thick yellow, green, or gray discharge from one or both eyes - Swelling, redness, or bulging of the eyelid - One eye still sealed shut while the other has been open for several days - Both eyes still closed after 3 weeks of age - Cloudiness that is getting worse, or a white spot on the eye - Squinting, pawing at the eye, or holding the head low - The third eyelid staying visible across the eye Go to an emergency clinic right away if the eye looks ruptured, if there is bleeding, if the kitten is crying and cannot be comforted, or if the eye is suddenly bulging outward. Schedule a routine visit if the eyes look normal but your kitten has not had a first wellness exam, or if you are unsure whether the discharge you are seeing is normal. Every kitten is an individual. A veterinarian who examines your kitten in person can tell you what is normal for that kitten and what needs treatment. Doses of any medication are calculated by your veterinarian based on your kitten's weight and health, so never give a medication without specific instructions. ## Frequently Asked Questions ### How long do kittens take to open their eyes? Most kittens start opening their eyes between 7 and 14 days after birth and finish by about 3 weeks. The process is gradual, so you may see a small slit first and a fully open eye several days later. A day or two of difference between the two eyes is usually normal. ### Do all kittens open their eyes at the same time? No. Timing varies with breed, birth weight, and overall health. Some kittens open their eyes closer to day 7, and others closer to day 14. What matters more is steady progress and whether the eyes look clean and comfortable once they are open. ### Can I help my kitten open its eyes? No. You should never pull or pry a kitten's eyelids apart. The tissue is fragile, and forcing it can scratch the cornea or cause an infection. If the eyes seem stuck, let your veterinarian examine them. ### What does normal kitten eye discharge look like? A small amount of clear or slightly dried crust at the lid margins is normal in the first weeks. Thick yellow, green, or gray discharge is not normal and usually points to infection. Clean normal crust with warm water and a fresh cotton ball, and call your vet if the discharge changes color or amount. ### When should I worry about a kitten's eyes? Worry if you see pus-like discharge, eyelid swelling, a white spot on the eye, squinting, or one eye that stays shut while the other opens. Any of these signs means the eye needs a veterinary exam, often the same day. Waiting can allow an infection to damage the cornea and affect vision for life. ## Related Articles - [Cat Eyes: Understanding Feline Vision, Common Eye Problems & Care Tips](/knowledge/veterinary-medicine/symptom-guides/cat-eyes-anatomy-health) - [Kitten Spay Timeline](/knowledge/veterinary-medicine/preventive-care/kitten-spay-timeline) - [Can Cats See in the Dark? Feline Vision Explained](/knowledge/veterinary-medicine/behavior/can-cats-see-in-the-dark-feline-vision-explained) - [Cat Eye Discharge: When Should You Worry?](/knowledge/veterinary-medicine/symptom-guides/cat-eye-discharge-when-to-worry) - [How Often Do Cats Go Into Heat? Feline Estrous Cycle & Signs Guide](/knowledge/veterinary-medicine/preventive-care/how-often-do-cats-go-into-heat) - [Introducing New Kitten](/knowledge/veterinary-medicine/clinical-methods/introducing-new-kitten) ## References 1. [Stereotyped Spatiotemporal Dynamics of Spontaneous Activity in Visual Cortex Prior to Eye Opening](https://pubmed.ncbi.nlm.nih.gov/40262899/). The Journal of neuroscience : the official journal of the Society for Neuroscience, 2025. 2. [Premature vision drives aberrant development of response properties in primary visual cortex](https://pubmed.ncbi.nlm.nih.gov/41059702/). eLife, 2025. 3. [Kitten Care - Cat Owners](https://www.merckvetmanual.com/cat-owners/caring-for-cats/kitten-care). Merck Veterinary Manual. 4. [Keeping an eye on pain: Characterization of pain behaviours in cats undergoing ophthalmic surgery](https://pubmed.ncbi.nlm.nih.gov/42365892/). Veterinary journal (London, England : 1997), 2026. 5. [Bilateral Third Eyelid Ectopic Cilia in a Maine Coon Cat](https://pubmed.ncbi.nlm.nih.gov/42768449/). Veterinary ophthalmology, 2026. 6. [Ocular surface physiology and aqueous tear secretion in cats of diverse cephalic conformations](https://pubmed.ncbi.nlm.nih.gov/36519689/). Veterinary ophthalmology, 2023. ## Further Reading - [Merck Veterinary Manual: Cat Owners](https://www.merckvetmanual.com/cat-owners) - [Cornell Feline Health Center: Health Information](https://www.vet.cornell.edu/departments-centers-and-institutes/cornell-feline-health-center/health-information) - [American Veterinary Medical Association: Pet Care](https://www.avma.org/resources-tools/pet-owners/petcare)