Can Sporotrichosis Affect the Eyes?

Yes, sporotrichosis can affect the eyes, a condition known as ocular sporotrichosis ^[1][2]. While sporotrichosis is most commonly a skin infection, the fungus can directly infect the eye, often when someone rubs their eyes with contaminated hands ^[2][3]. This is an increasingly recognized risk after handling infected cats, which can carry large amounts of the fungus ^[1][4]. Though this specific feline-transmitted strain (Sporothrix brasiliensis) is most common in South America (particularly Brazil), it is spreading, and any sick cat with sores should be handled with caution ^[5][1]. Ocular sporotrichosis is a serious, potentially sight-threatening infection that requires prompt medical treatment ^[4][6].

How the Infection Spreads to the Eye

Most ocular sporotrichosis infections occur through direct contact with an infected cat ^[7][2]. Stray or sick cats infected with the fungus often have a high burden of it in their saliva, nasal secretions, and on their claws or fur ^[5][8]. If you handle a sick cat and then touch or rub your eyes without thoroughly washing your hands, the fungus can easily transfer to the delicate tissues of the eye ^[2][1].

To protect yourself and your family:

• Avoid spreading it to others: Do not share towels, washcloths, or pillows, and wash your hands immediately after touching your face ^[2]. Do not touch your healthy eye ^[1].
• Handle sick cats safely: Use gloves when handling a sick animal, wash your hands thoroughly afterward, and ensure the cat is seen by a veterinarian for proper diagnosis and treatment ^[5][2].

Recognizing the Symptoms

Symptoms typically develop within a few days to a few weeks after exposure ^[2][9]. When the fungus infects the eye, it typically causes severe inflammation known as granulomatous conjunctivitis ^[7][10]. You may experience:

• Severe redness, swelling, and crusty, mucus-like discharge in the affected eye ^[1][11].
• The formation of small, fleshy, salmon-pink bumps (granulomas) on the white of the eye or the inner eyelid ^[2][1].

In many cases, patients develop a specific presentation known as Parinaud oculoglandular syndrome ^[10][2]. This syndrome is characterized by the combination of an inflamed, red eye and significantly swollen lymph nodes (lymphadenopathy) on the same side of the face—typically near the ear, jaw, or neck ^[10][12].

Where to Get Care and Why It Is Critical

Because this infection can permanently damage your vision, do not wait for a routine appointment with a primary care doctor if it will take days ^[4]. It is best to be evaluated by an ophthalmologist (a specialist eye doctor) or at an urgent care or emergency room that can consult with an eye specialist ^[4][1].

Delaying treatment significantly increases the risk of permanent eye damage, including severe scarring (fibrosis), the eyelid fusing to the eyeball (symblepharon), or permanent vision loss ^[6][13].

Your doctor will need to distinguish sporotrichosis from “Cat Scratch Disease.” Cat Scratch Disease is caused by bacteria (Bartonella henselae) and presents with nearly identical symptoms—a red eye and swollen lymph nodes after cat contact ^[8][14]. However, the treatments are completely different ^[12]. Cat Scratch Disease is treated with a short course of antibiotics, while ocular sporotrichosis requires systemic, oral antifungal medications, most commonly itraconazole ^[10][2][12].

To ensure you get the right treatment, your doctor may need to take a small swab or scraping of your eye to culture and identify the underlying organism ^[10][15]. If you are prescribed itraconazole, you will likely need to take it for several months ^[16][2]. Make sure your doctor reviews your current medications, as itraconazole can interact with many common drugs ^[16].