Watery Eyes After Cataract Surgery: Complication After Cataract Operation

Author: Dr. Victor Derhartunian 3 June 2025

After cataract surgery, watery eyes are among the most common complaints. But what is behind it? In this blog, you will find out why increased tearing after surgery is normal, which symptoms indicate that something is wrong, and how long this condition lasts. We highlight possible complications, such as dysphotopsia and inflammation, and give practical tips on what you can do to support the healing process.

Why watery eyes after cataract surgery?

Watery eyes after laser eye surgery or lens replacement following cataract surgery are completely normal and harmless in most cases. But what causes them and what processes in the eye or body trigger them?

Cause: Which step of the procedure triggers watery eyes?

Watery eyes after cataract surgery are a common symptom and can be triggered by various factors that occur during the procedure. An important step that can lead to this reaction is the manipulation of the cornea and the tissue around the lens.

During the operation, the cloudy lens is removed and replaced with an artificial lens. This procedure, in particular the opening of the cornea, can irritate the eye and trigger increased production of tear fluid. The cornea is an extremely sensitive tissue that reacts to even the smallest stimuli. In addition, particles or fluid can enter the eye during the operation, which also activates the tear glands.

Another possible trigger is temporary swelling of the cornea or surrounding tissue. This reaction to surgery is usually mild and normal, but can cause the eye to produce more tears to protect and soothe the surface.

Reaction of the eye: inflammation and irritation after surgery

After cataract surgery, a slight inflammation may occur in the first few days or weeks, which is often a normal reaction of the body to the surgical procedure. The insertion of the new artificial lens also causes the immune system to react to the procedure.

The inflammation can cause increased tearing as the eye tries to soothe the irritated areas. Tear production is a natural protective reaction of the eye: it helps to flush out particles and foreign bodies that may have entered the eye during surgery, and it moistens the eye surface to relieve discomfort. The tear fluid contains anti-inflammatory substances that help accelerate the healing process and prevent infections.

Symptoms: What are the effects of watery eyes during the healing period?

  • Blurred vision: Due to increased tear production, vision may be temporarily impaired. Tears can form a film on the cornea that refracts light differently, leading to blurred or cloudy vision. This is common, especially in the first few weeks after surgery, as the eye is still in the healing phase.
  • Glare and light sensitivity: Watery eyes can be accompanied by increased glare or light sensitivity. This is because the cornea is irritated and light is not optimally transmitted through the eye. These symptoms usually occur in direct sunlight or strong light sources, which is why wearing sunglasses is often recommended during this time.
  • Increased irritation: The increased tearing is usually a reaction to irritation or a slight inflammation that occurs after the procedure. This can manifest as a scratchy or burning sensation in the eye, which is intensified by the watery eyes.
  • Discomfort in everyday life: Constant tearing of the eye can also impair daily activities such as reading or watching TV. Sufferers may need to blink more often or wipe their eyes, which can lead to additional irritation if the eyes are not adequately rested.

Risks and problems due to watery eyes

  • Increased risk of infection: Watery eyes that constantly need to be wiped can further irritate the eye surface. Constant touching of the eyes, especially with unwashed hands, can introduce bacteria or particles into the eye, increasing the risk of inflammation. The entry of particles can also further irritate the cornea.
  • Delayed healing: If the eye tears excessively, this may indicate prolonged irritation or slight inflammation. Inadequate treatment can prolong the healing time and delay the complete restoration of final visual acuity.
  • Poor wound healing: Increased tearing can disrupt the healing of the cornea after the procedure. In rare cases, this can lead to poorer scarring and impair visual quality.
  • Complications such as retinal detachment: Persistent tearing can indirectly indicate more serious problems, such as incipient retinal detachment or posterior vitreous detachment. Patients should pay attention to additional symptoms such as flashes or the perception of black spots and immediately consult their ophthalmologist if these occur.

Further complications besides watery eyes: Dysphotopsia, negative dysphotopsia & Co.

In addition to watery eyes, other symptoms may occur after cataract surgery, which are associated with healing or possible complications. These include in particular dysphotopsia, negative dysphotopsia, and various visual effects triggered by the procedure.

Dysphotopsia and negative dysphotopsia

  • Dysphotopsia is a general term for visual phenomena that can occur after the implantation of an artificial lens. These include light reflections, glare, or halos, which are perceived as disturbing, especially with direct light incidence, such as sunlight or driving at night. These light phenomena arise from the new optical properties of the artificial lens and the altered light refraction in the eye.
  • Negative dysphotopsia, on the other hand, describes a different phenomenon: affected individuals see dark shadows or black edges in their peripheral field of vision. This symptom can be very irritating and occurs more frequently in the first few weeks after surgery as the eye adjusts to the new lens. In most cases, negative dysphotopsia disappears on its own over time, but in rare cases, it can persist longer.

Further possible complications:

  • Blurred vision: Even after surgery, temporary blurriness may occur during the healing phase until the eye has fully recovered. This is often caused by swelling of the eye or a delayed adjustment to the new lens.
  • Retinal detachment or retinal hole: In rare cases, serious complications such as retinal detachment or a retinal hole can occur after cataract surgery. These can manifest as symptoms such as sudden flashes, the perception of black spots, or a shadow in the field of vision. Patients should immediately consult their ophthalmologist if such signs appear, as rapid treatment is necessary to prevent permanent damage.
  • Inflammation: As already mentioned, inflammation is a common reaction after surgery, which can lead to watery eyes and increased light sensitivity. Antibiotic and anti-inflammatory eye drops help to relieve these symptoms and minimize the risk of more serious inflammation.

What to do for increased tearing after cataract surgery:

In case of increased tearing after cataract surgery, it is important to take some measures to support healing and relieve symptoms. Watery eyes are a common and usually harmless reaction to the procedure, but can be uncomfortable. Here are some tips on what you can do:

1. Use eye drops

Your ophthalmologist will usually prescribe antibiotic and anti-inflammatory eye drops, which not only prevent inflammation but also relieve irritation. These drops should be used exactly as directed to promote healing and reduce tearing.

2. Avoid contact with the eye

It is important not to rub the eye, even if it is watery or irritated. Touching can introduce particles into the eye, which increases the risk of infection. Instead, use sterile disposable paper towels to gently blot away excess tears.

3. Wear sunglasses

In the first few weeks after surgery, the eye is particularly sensitive to light, which can lead to increased tearing. Wearing sunglasses protects the eye from glare and bright light sources, which relieves symptoms.

4. Attend follow-up appointments

Regular follow-up appointments with the ophthalmologist are crucial to monitor healing progress and rule out possible complications. If symptoms such as tearing do not subside after several weeks, the doctor may recommend additional measures or an adjustment of therapy.

5. Rest and recuperation

In the first few days after surgery, you should avoid sports such as fitness or jogging to minimize strain on the eye. Staying in open waters should also be avoided to prevent the risk of infection from water entering the eye.

6. When to see a doctor?

If tearing is accompanied by additional symptoms such as pain, severe redness, or blurred vision, you should immediately consult your ophthalmologist. These symptoms can indicate inflammation or complications such as retinal detachment, which require prompt treatment.

How long the eye can tear after surgery

Increased tearing after cataract surgery is a common and normal symptom that usually occurs in the first few days to weeks after the procedure. In most cases, watery eyes subside within 4 to 6 weeks, once the eye has gone through the healing process and has adjusted to the new artificial lens.

Typical periods for watery eyes:

  • First few days to weeks: During this phase, watery eyes are completely normal, as the cornea and surrounding tissue are irritated and healing. The eyes can be particularly sensitive to light, air, and foreign bodies, which increases tearing.
  • 3 to 4 weeks after surgery: Tearing should gradually decrease as the eye continues to recover and swelling subsides. However, if symptoms persist or worsen, this could indicate inflammation or other complications that require a follow-up examination by the ophthalmologist.

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Author:

Dr. Victor Derhartunian

Nachdem er sein Handwerk von den beiden Pionieren der Laserchirurgie gelernt hat, gehört Dr. Victor Derhartunian zu den führenden Augenlaser-Chirurgen. Er leitet die Praxis in Wien und kann seine Patienten in fünf Sprachen beraten.

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