There's a crack on the inner corner of the eye that won't heal.

A persistent crack at the inner corner of the eye may be caused by Sjögren's syndrome, malnutrition, allergic conjunctivitis, or other conditions. Different treatments can be selected depending on the underlying cause.

1. Sjögren's Syndrome

If Sjögren's syndrome is caused by genetic factors or viral infections, the lacrimal glands may be damaged and unable to produce sufficient tears. This leads to dryness of the skin around the eye due to lack of tear moisture. Under medical guidance, medications such as sodium hyaluronate eye drops, carboxymethylcellulose sodium eye drops, or compound dextran eye drops can be used to relieve eye dryness.

2. Malnutrition

If poor nutrition—such as from picky eating—leads to vitamin deficiencies, particularly vitamin B2, it may result in dry, cracked skin. Under medical supervision, supplements such as vitamin B2 tablets, vitamin A softgels, or vitamin C tablets may be recommended for treatment.

3. Allergic Conjunctivitis

If allergic conjunctivitis is triggered by exposure to pollen, dust mites, or using substandard skincare or cleansing products, increased eye secretions may irritate the surrounding skin, leading to ulceration. Under a doctor’s guidance, treatments may include sodium cromoglicate eye drops, olopatadine hydrochloride eye drops, or tobramycin-dexamethasone eye drops.

In addition, the condition could also result from eye trauma; medical advice should be followed for appropriate treatment.