Glossary O

Rosacea Definitions

The cornerstone of successful treatment and control of rosacea begins with an understanding of the terminology associated with rosacea and ocular rosacea.


A | B | C | D | E | F | G | H | I |J | K | L | M |N | O | P | Q | R | S | T | U | V | W | X | Y | Z



Ocular – of the eye.

Ocular Rosacea – rosacea affecting the eye causing redness, irritation and gritty feeling.

Oedema- swelling of the skin due to an abnormal accumulation of fluid beneath the skin. This leads to a puffy appearance.

Ointment – A medication preparation that is applied topically to the skin. An ointment has an oil base whereas a cream is water-soluble.

Omega 3s- considered essential fatty acids, necessary for human health but the body can’ t make them — you have to get them through food. Also known as polyunsaturated fatty acids (PUFAs), omega-3 fatty acids play a crucial role in brain function, as well as normal growth and development. They may reduce the risk of heart disease. Research shows that omega-3 fatty acids also reduce inflammation and may help lower risk of chronic diseases such as heart disease, cancer, and arthritis.

Onset- In medical terms, the first appearance of the signs or symptoms of an illness or condition such as, for example, the onset of psoriatic arthritis.

Ophthacet® – Ophthalmic antibiotic medication used in the treatment of infections. Also sold under the brand name(s): Isopto-Cetamide®, Sulfair®, Ak-Sulf®, Cetamide®, Sulfair Forte®, Sodium Sulamyd®, Sulten-10®, sulfacetamide.

Oral- by the mouth.

Osteoarthritis- A type of arthritis caused by symptoms of inflammation, breakdown, and eventual loss of cartilage in the joints. Also known as degenerative arthritis.