Last Updated: February 2026 | Reviewed by Dr. Davinder Sidhu, OD · British Columbia, Canada
OCUNOX Eye Ointment: A Complete Guide for Nighttime Dry Eye Relief
If you've ever woken up with dry, scratchy, or irritated eyes, you know how frustrating nighttime dry eye can be. While daytime eye drops help during waking hours, they don't provide the sustained moisture your eyes need overnight. That's where OCUNOX eye ointment comes in. It's a preservative-free, vitamin A-based ointment specifically designed for nighttime dry eye relief.
In this comprehensive guide, we'll cover everything you need to know about OCUNOX, including how it works, its key ingredients, how to use it, and how it compares to other nighttime dry eye treatments available in Canada. For a focused look at tolerability, see our Ocunox side effects guide.
What Is OCUNOX Eye Ointment?
OCUNOX is a preservative-free eye ointment manufactured by Candor (formerly known as Candorvision). It is specifically formulated for nighttime use and contains vitamin A (retinol palmitate) as its key active ingredient.
Unlike eye drops that can evaporate quickly, OCUNOX has a thicker ointment consistency that stays on the eye surface throughout the night, providing hours of continuous lubrication and protection.
Key Ingredients
- Vitamin A (Retinol Palmitate): Supports the health of the eye surface and helps maintain the corneal epithelium. Vitamin A deficiency is associated with dry eye, and topical application helps nourish the eye surface.
- Liquid Paraffin and White Petrolatum: Form a protective barrier on the eye surface to prevent moisture evaporation overnight.
- Wool Fat (Lanolin): A natural emollient that helps retain moisture.
- No preservatives: The preservative-free formula minimizes the risk of irritation, making it suitable for sensitive eyes and frequent use.
How Does OCUNOX Work?
OCUNOX works through a dual mechanism:
- Physical barrier: The ointment base creates a protective layer over the eye surface, preventing tear evaporation while you sleep. This is particularly important because we don't blink during sleep, which normally spreads tears across the eye.
- Nutritional support: Vitamin A nourishes the corneal epithelium and supports the health of the meibomian glands, which produce the oily layer of the tear film.
Who Should Use OCUNOX?
OCUNOX is ideal for:
- People who wake up with dry, irritated, or gritty-feeling eyes
- Those diagnosed with moderate to severe dry eye disease
- Patients with nocturnal lagophthalmos (incomplete eyelid closure during sleep)
- People who find daytime drops insufficient for overnight relief
- Those seeking a preservative-free nighttime option
- Post-LASIK or post-surgical patients experiencing nighttime dryness
How to Use OCUNOX Eye Ointment
- Wash your hands thoroughly.
- Remove contact lenses (if applicable). Ointments should not be used with contacts.
- Tilt your head back and pull down your lower eyelid gently.
- Squeeze a small strip (approximately 1 cm) of ointment into the pocket formed by the lower eyelid.
- Close your eye gently and blink a few times to distribute the ointment.
- Apply just before going to sleep.
Important: OCUNOX will cause temporary blurred vision, which is why it's recommended for nighttime use only. Do not drive or operate machinery after application.
OCUNOX vs. Other Nighttime Dry Eye Treatments
| Feature | OCUNOX | Refresh Lacri-Lube | Systane Nighttime | I-DROP PUR GEL |
|---|---|---|---|---|
| Preservative-Free | Yes | No | No | Yes |
| Contains Vitamin A | Yes | No | No | No |
| Format | Ointment | Ointment | Ointment | Gel Drop |
| Best For | Overnight dry eye | Overnight dry eye | Overnight dry eye | Daytime & nighttime |
| Canadian Availability | Yes | Yes | Yes | Yes |
OCUNOX stands out as the only preservative-free option with vitamin A in this comparison. For Canadians seeking a gentler nighttime option, this is a significant advantage. Not sure which eye ointment is right for you? Talk to your optometrist.
You can find OCUNOX eye ointment and I-DROP PUR GEL in our store.
Benefits of OCUNOX
- Preservative-free: No benzalkonium chloride (BAK) or other preservatives that can cause cumulative damage to the eye surface.
- Vitamin A enriched: Provides nutritional support for the corneal surface.
- Long-lasting relief: Ointment consistency provides hours of overnight protection.
- Made for Canadian patients: Available through eye care professionals and authorized retailers across Canada.
- Suitable for sensitive eyes: The preservative-free formula is well-tolerated even by those with severe dry eye.
Side Effects and Precautions
OCUNOX is generally very well-tolerated. Possible side effects include:
- Temporary blurred vision: Expected and normal. This is why it's used at bedtime.
- Mild discomfort upon application: Rare, and usually subsides quickly.
- Sticky residue in the morning: Some users notice a slight residue around the eyes upon waking. Simply clean with warm water.
For a detailed breakdown of each side effect, how common it is, and when to call your optometrist, see our Ocunox side effects guide.
Precautions:
- Remove contact lenses before use.
- Do not use if you are allergic to any of the ingredients, including lanolin (wool fat).
- Consult your eye care professional before use if you are pregnant or breastfeeding.
- Keep the tube tip clean and avoid touching it to any surface.
Tips for Managing Nighttime Dry Eye
In addition to using OCUNOX, these tips can help improve your nighttime eye comfort:
- Use a humidifier: Adding moisture to your bedroom air can reduce tear evaporation overnight. This is especially important during winter when indoor heating dries the air.
- Avoid fans and direct airflow: Ceiling fans, heating vents, or air conditioning blowing on your face can worsen nighttime dryness.
- Warm compresses before bed: Applying a warm compress for 5 to 10 minutes before sleep can help express meibomian glands and improve tear quality.
- Stay hydrated: Drink adequate water throughout the day. Dehydration affects tear production.
- Omega-3 supplements: Some studies suggest omega-3 fatty acids can support tear production and reduce inflammation.
Frequently Asked Questions
Can I use OCUNOX during the day?
OCUNOX is designed for nighttime use because of its thick ointment consistency, which causes temporary blurred vision. For daytime use, preservative-free eye drops like I-DROP PUR or I-DROP PUR GEL are recommended instead.
Is OCUNOX available without a prescription in Canada?
Yes, OCUNOX is available without a prescription. It can be purchased through eye care professionals, authorized optical retailers, and online stores across Canada.
How long does one tube of OCUNOX last?
One 5g tube of OCUNOX typically lasts 4 to 6 weeks with nightly use, depending on how much ointment you apply per dose.
Can I use OCUNOX with my regular eye drops?
Yes, OCUNOX can be used alongside your daytime eye drop regimen. Use your regular drops (such as Hyabak or Hylo) during the day and apply OCUNOX as the last step in your evening routine, just before sleep.
Is OCUNOX safe for long-term use?
Yes, because OCUNOX is preservative-free, it is suitable for long-term nightly use. However, if your dry eye symptoms persist or worsen, consult your eye care professional for a comprehensive dry eye assessment.
Can children use OCUNOX?
OCUNOX can be used for children experiencing nighttime dry eye, but consult with a pediatric eye care professional for proper guidance on usage and dosage.
Where to Buy OCUNOX in Canada
OCUNOX is available through authorized Canadian retailers, optical clinics, and online. You can purchase Candor OCUNOX ointment directly from MyPear for convenient delivery across Canada.
Final Thoughts
OCUNOX eye ointment is one of the best nighttime dry eye solutions available in Canada. Its preservative-free formula, vitamin A content, and effective ointment base make it a standout choice for anyone suffering from overnight dry eye symptoms. Whether you're dealing with morning eye irritation, nocturnal lagophthalmos, or simply need sustained overnight moisture, OCUNOX is worth discussing with your eye care professional.
For a complete dry eye management routine, consider pairing OCUNOX with preservative-free daytime drops for round-the-clock comfort.
About the Reviewer
Dr. Davinder Sidhu is an optometrist based in British Columbia with a focus on dry eye management and preservative-free solutions. Learn more at TheGenuwineOD.com or follow him on Instagram and Facebook.
