It can be found in children and adults and typically occurs on only one eye. Conjunctival PAM is often precancerous and leads to life-threatening malignant melanoma. Conjunctival PAM should be treated with surgery, cryotherapy, or sometimes chemotherapy eye-drops to eradicate it before melanoma develops.

What causes ocular Melanosis?

The disease is caused by an increase of melanocytes in the iris, choroid, and surrounding structures. Overproduction of pigment by these cells can block the trabecular meshwork through which fluid drains from the eye. The increased fluid in the eye leads to increased pressure, which can lead to glaucoma.

Can melanosis become melanoma?

Iris melanoma is the most common cancerous growth of the eye and primarily arises from the iris and the ciliary body. In contrast, iris melanosis is a benign (non-cancerous) change in the iris pigment, often golden-brown in color. Iris melanosis can in some cases become iris melanoma, but not always.

Is melanosis a conjunctival cancer?

Primary acquired melanosis of the conjunctiva (PAM) is a potentially serious melanocytic lesion that can lead to the development of melanoma. In a practice of ocular oncology, PAM accounted for 11% of all conjunctival tumors and 21% of melanocytic lesions.

What is melanoma in eye?

Melanoma is a type of cancer that develops in the cells that produce melanin — the pigment that gives your skin its color. Your eyes also have melanin-producing cells and can develop melanoma. Eye melanoma is also called ocular melanoma. Most eye melanomas form in the part of the eye you can’t see when looking in a mirror.

What are the treatment options for uveal melanoma of the eye?

In more advanced cases or if there is serious eye damage, enucleation (removal of the eyeball) may be needed. Although rare, melanomas of the conjunctiva tend to be more aggressive than most uveal melanomas.

What are the symptoms of primary acquired melanosis of the eye?

Pigmented Conjunctival Cancers (Primary Acquired Melanosis) 1 By Paul T. Finger, MD. 2 Description. Malignant melanomas can start as a nevus/freckle or arise as newly formed conjunctival… 3 Symptoms. Pigmentation of the surface of the eye and/or eyelids. 4 Diagnosis. Most pigmented spots on the eye are benign. 5 Related links.

Can small eye melanomas cause vision loss?

Small eye melanomas can cause some vision loss if they occur in critical parts of the eye. You may have difficulty seeing in the center of your vision or on the side.