What is Globe Rupture?
Globe rupture is a severe ocular condition in which the integrity of the eye's outer membranes, including the sclera and cornea, is compromised due to trauma. This injury causes the extrusion of intraocular contents, which can...
Overview of Glaucomatocyclitic Crisis
Glaucomatocyclitic crisis, also known as Posner-Schlossman Syndrome (PSS), is a rare eye condition marked by recurrent episodes of significantly elevated intraocular pressure (IOP) and mild anterior uveitis. PSS typically affects young to middle-aged adults and manifests...
What is Glaucoma?
Glaucoma caused by retinal disorders is a secondary type of glaucoma that develops as a result of underlying retinal diseases. These retinal conditions can raise intraocular pressure (IOP) or damage the optic nerve, resulting in glaucomatous changes....
What is glaucoma?
Glaucoma is a group of eye conditions that damage the optic nerve, which is essential for clear vision. This damage is frequently caused by elevated intraocular pressure (IOP) within the eye. Glaucoma is a leading cause of...
Basics of Tumor-Related Glaucoma
Glaucoma associated with ocular tumors is a secondary form of glaucoma caused by an intraocular tumor. These tumors can directly or indirectly raise intraocular pressure (IOP), resulting in glaucomatous optic neuropathy. This condition is especially difficult...
Introduction to Elevated EVP Glaucoma
Glaucoma with elevated episcleral venous pressure (EVP) is a type of secondary open-angle glaucoma in which an increase in intraocular pressure (IOP) is directly related to increased pressure in the episcleral veins. This condition occurs...
Basics of Glaucoma from Corneal Disorders
Glaucoma associated with corneal disorders is a complex condition in which corneal abnormalities contribute to the development or progression of glaucoma. Glaucoma is a group of eye diseases that cause damage to the optic...
What are Giant Cell Arteritis' Ocular Manifestations?
Giant Cell Arteritis (GCA), also known as temporal arteritis, is an inflammatory condition affecting large and medium-sized arteries, primarily in the head and neck. This vasculitis can cause severe ocular manifestations, which are...
What is fungal keratitis?
Fungal Keratitis is a severe and potentially sight-threatening cornea infection caused by fungal organisms. The cornea is a clear, dome-shaped surface that covers the front of the eye and is essential for focusing vision. Fungal infections...
Definition of Functional Lacrimal Duct Obstruction
Functional Lacrimal Duct Obstruction (FLDO) occurs when the lacrimal (tear) duct, which drains tears from the eye into the nose, fails to function properly, resulting in excessive tearing (epiphora) or recurring eye infections. Unlike...
What is Fuchs Heterochromic Iridocyclitis?
Fuchs' Heterochromic Iridocyclitis (FHI) is a chronic, usually unilateral inflammatory condition of the eye. It is distinguished by an unusual combination of iris color changes (heterochromia), low-grade anterior uveitis (iridocyclitis), and the presence of small,...
What is Fuchs Dystrophy?
Fuchs' Dystrophy is a progressive eye disease that affects the cornea, or clear front surface of the eye. This condition is distinguished by the progressive deterioration of the endothelial cells that line the inner layer of...
What is Fraser syndrome?
Fraser Syndrome is a rare genetic disorder characterized by a variety of congenital abnormalities, including cryptophthalmos (when the eyelids fail to develop properly, resulting in a fusion of the skin over the eyes), syndactyly (finger and...
What is Foster Kennedy syndrome?
Foster Kennedy Syndrome is a rare neurological condition in which one eye has optic atrophy and the other has papilledema (swelling of the optic disc). This condition is typically caused by a space-occupying lesion, such...
What is Floppy Eyelids Syndrome?
Floppy Eyelid Syndrome (FES) is an ocular condition characterized by upper eyelid laxity and floppiness, which allows them to be easily everted (turned inside out). This condition frequently causes chronic eye irritation, discomfort, and redness...
What is Familial Exudative Vitreoretinopathy?
Familial exudative vitreoretinopathy (FEVR) is a rare genetic disorder that affects the formation and function of blood vessels in the retina, the light-sensitive tissue at the back of the eye. This condition can cause vision...
What is eyelid squamous cell carcinoma?
Eyelid squamous cell carcinoma (SCC) is a skin cancer that develops from squamous cells in the epidermis, the skin's outermost layer. It is the second most common malignant tumor on the eyelid, after basal...
What is eyelid sebaceous gland carcinoma?
Eyelid sebaceous gland carcinoma is a rare but aggressive malignant tumor that develops from the sebaceous glands, which produce sebum, an oily substance that moisturizes the skin and hair. This carcinoma primarily affects the...
What is Eyelid Laceration?
An eyelid laceration is a cut or tear in the eyelid tissue that is typically caused by trauma or injury. This condition can affect the skin's surface layers or penetrate deeper, involving muscles, fat, and even...
What is eyelid edema?
Eyelid edema is a condition in which the eyelids swell due to the accumulation of fluid in the tissues. Swelling of one or both eyelids can be caused by a variety of factors, including allergic reactions,...
What is Eyelid Dermatitis?
Eyelid dermatitis is an inflammatory condition that affects the delicate skin on the eyelids. It is distinguished by redness, swelling, itching, and scaling of the eyelid skin. A variety of factors can contribute to this condition,...
What are eyelid burns?
Eyelid burns are injuries to the eyelid's skin and tissues caused by exposure to heat, chemicals, electricity, or radiation. These burns can range from mild to severe, with serious consequences if not treated properly. Burns can...
What is eyelid basal cell carcinoma?
Eyelid basal cell carcinoma (BCC) is a skin cancer that develops from basal cells in the epidermis, the skin's outermost layer. It is the most common malignant tumor of the eyelid, accounting for nearly...
What is exotropia?
Exotropia is an ocular condition marked by outward deviation of one or both eyes. This type of strabismus, also called divergent strabismus, occurs when the eyes are misaligned and point away from each other. Exotropia can be...
What is exophoria?
Exophoria is an ocular condition in which one eye moves outward while focusing on an object. Exophoria, as opposed to exotropia, is typically latent and only becomes apparent under certain conditions, such as stress, fatigue, or disruption...
What is Exfoliative Glaucoma?
Exfoliative glaucoma (XFG), also known as pseudoexfoliative glaucoma, is a type of secondary open-angle glaucoma that occurs when extracellular material accumulates in the anterior segment of the eye. This condition is linked to exfoliation syndrome (XFS),...
Introduction to Esotropia
Esotropia is a type of strabismus (eye misalignment) in which one or both eyes turn inward and toward the nose. This condition can occur intermittently or continuously, affecting either one or both eyes. Esotropia can occur at...
Introduction to Esophoria
Esophoria is a type of eye misalignment, or strabismus, in which one eye deviates inward towards the nose when focused on an object. Unlike esotropia, which is a constant misalignment, esophoria usually occurs intermittently and is most...
Introduction to Epithelial Basement Membrane Dystrophy
Epithelial Basement Membrane Dystrophy (EBMD), also known as Map-Dot-Fingerprint Dystrophy or Cogan's Microcystic Dystrophy, is a common but usually non-progressive corneal condition. EBMD affects the corneal epithelium, which is the cornea's outermost layer, as...
Introduction to Episcleritis
Episcleritis is an inflammatory condition that affects the episclera, which is a thin layer of tissue located between the conjunctiva and the sclera. It is usually a harmless, self-limiting condition marked by redness, mild discomfort, and no...
