What is Oculodermal Melanocytosis?
A condition marked by brown, blue, or gray patches, usually on the inside of the eye and on the skin near or around the eye. It may also affect the eyelid and mouth. It is caused by an increase in the number of cells called melanocytes in skin and eye tissue.
Does iris Melanosis affect vision?
The first sign observed in most cases is a darkening in iris color. The pupil may also change shape, or a raised area on the iris may be seen. As the disease progresses, the tumor can cause glaucoma, resulting in eye redness, squinting, cloudiness of the cornea, vision loss and over time, eye enlargement.
What are iris Mammillations?
Iris mammillations are dark brown, smooth, mound- or dome-shaped protuberances that are typically found on the anterior surface of a diffuse iris nevus or deeply pigmented iris. 3,4. Iris mammillations are most often found in patients with ocular melanocytosis, as in our patient.
Is ocular melanocytosis serious?
AT A GLANCE. Oculodermal melanocytosis (ODM) is an uncommon condition, but it is a profound predisposing factor for uveal melanoma. ODM serves as a precursor to uveal melanoma, and recognition of ODM can allow early detection of melanoma. However, melanoma that arises in eyes with ODM carries a more ominous prognosis.
What causes brushfield spots?
Brushfield spots are a characteristic feature of the chromosomal disorder Down syndrome or trisomy 21. They occur in 35–78% of newborn infants with Down syndrome. Brushfield spots tend to be obscured by pigmentation of the anterior border layer of the iris in patients with darker irides.
How do you get rid of ocular melanocytosis?
Treatment of ocular melanoma is based on what part of the eye is affected and whether it has metastasized to other parts of the body. Surgery is one method for treating melanoma of the eye. Removal of the eye (enucleation) may be necessary in some cases of large tumors when other treatment methods are not suitable.
Is Iris Melanosis a tumor?
Feline iris melanosis is generally a benign change that should be monitored closely, while uveal melanoma is a malignant tumor, usually of the iris, that can be detrimental to the eye (causing inflammation and glaucoma) and has the potential to metastasize (spread to other parts of the body).
What is ocular hypertension?
What is Ocular Hypertension? If you have ocular hypertension, you have a build-up of pressure inside the eye. This intraocular pressure is higher than average (measured in mmHg). When the front of the eye does not allow for proper fluid drainage, eye pressure increases.
What is the pathophysiology of ocular melanosis?
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.
What is the incidence of glaucoma in people with ocular hypertension?
Over a 5-year period, several studies have shown the incidence of glaucomatous damage in people with ocular hypertension to be about 2.6-3% for intraocular pressures of 21-25 mm Hg, 12-26% for intraocular pressures of 26-30 mm Hg, and approximately 42% for those higher than 30 mm Hg.
Can certain medications cause ocular hypertension?
Certain medications can have the side effect of causing ocular hypertension in certain individuals. Steroid medicines used to treat asthma and other conditions have been shown to increase the risk for ocular hypertension. Even steroid eye drops used after LASIK and other refractive surgery can cause high eye pressure in susceptible individuals.