Infectious Conjunctivitis / Pink Eye / Red Eye Definition: Conjunctivitis is an inflammation or redness of the conjunctiva (transparent membrane underside the eyelid covering the white part of the eye). Inflammation of the small blood vessels of conjunctiva causes red or pink color of the eye. Inflammation most commonly occurs because of infection or allergic […]

Intermediate Uveitis / Pars Planitis Definition: Intermediate uveitis refers to inflammation localized to the vitreous and peripheral retina. Intermediate means it is located in the middle part of the eye. Characteristics of Intermediate Uveitis Commonly seen in young adults or teenagers Intermediate uveitis may be the first expression of autoimmunity in patients Asymmetric disease Mostly […]

KCS in Autoimmune Disorder Definition: KCS or Keratoconjunctivitis Sicca is a painful autoimmune disorder characterized by inflammation of the cornea and conjunctiva in eye. It mainly occurs because of the inability of the tear gland (lacrimal gland) to produce watery tears. This leads to decrease or no moistening of eyes, resulting in chronically dry and […]

Keratoconus Definition: Keratoconus is a progressive and uncommon eye disease characterized by thinning or weakening of the cornea that eventually bulges out into a cone-like shape. This cone shape deflects light entering in to the eye and result in distorted vision. It can occur in one or both eyes but eventually develops in both eyes, […]

Mooren’s Ulcer Definition Mooren’s ulcer is a painful peripheral ulcerative keratitis (PUK) with no associated scleritis and systemic disorder that may be considered responsible for the progressive destruction of the cornea. The disease generally begins with intense inflammation of the limbus, episclera and conjunctiva. The ulcers leave behind either an opaque, oedematous central cornea. Characteristics […]

Normal Tension Glaucoma Definition: Normal-tension glaucoma, also called as low-tension glaucoma is a unique condition in which optic nerve damage and vision loss have occurred despite a normal pressure inside the eye. The angle formed by iris and cornea is open and appears normal similar to primary open-angle glaucoma. Optic nerve damage and vision loss […]

Ocular Hypertension Definition: Ocular hypertension is a condition characterized by higher than normal pressure (21 mm of hg) measured in one or both eyes on 2 or more occasions. Optic nerve is normal with no signs of glaucoma in persons with intraocular hypertension but they are definite suspects of glaucoma and should be closely monitored. […]

Open-Angle Glaucoma Definition Open-angle glaucoma also called primary or chronic glaucoma is defined as glaucoma with wide and open angle between iris and cornea along with raised intraocular pressure. IOP rises due to slow clogging of drainage canals of eye. Facts about Open-angle glaucoma It is the most common form of glaucoma, accounting for at […]

OSSN or Ocular Surface Squamous Neoplasia Definition: Ocular surface squamous neoplasia (OSSN) is a common malignancy of the squamous epithelium of the conjunctiva and cornea that comprises of the wide spectrum of dysplastic alterations. It can also be called as ‘skin cancer’ of the eye and ranges from “precancerous” lesions to bonafide invasive carcinoma. Histological […]

Pan Uveitis / Diffuse Uveitis Pan uveitis is the inflammation of all areas of the uvea, i.e., iris, ciliary body and the choroid. It covers a large group of diverse diseases, which affect not only the uvea but also the retina and vitreous humor. Characteristics of Pan Uveitis Is a serious disease Has a combination […]