What is Spherophakia?
Spherophakia is a rare congenital bilateral eye disorder, which presents with weak zonules around a smaller and more spherical crystalline lens with an increased anteroposterior thickness of the lens, and highly myopic eye.
What is Hypermature cataract?
What are Hypermature Cataracts? A hypermature cataract is one that has been left untreated and has grown dense, hard, and pearly white. Hypermature cataracts are a challenge to remove but will eventually cause complete loss of vision if left untreated.
What is Phacoanaphylactic glaucoma?
Phacoantigenic Glaucoma (formerly known as Phacoanaphylaxis) Phacoantigenic glaucoma is a granulomatous inflammatory reaction directed against own lens antigens after surgery or penetrating trauma, leading to obstruction of the trabecular meshwork and increased intraocular pressure.
What are the types of cataract?
Types of cataracts
- Cataracts affecting the center of the lens (nuclear cataracts).
- Cataracts that affect the edges of the lens (cortical cataracts).
- Cataracts that affect the back of the lens (posterior subcapsular cataracts).
- Cataracts you’re born with (congenital cataracts).
What is a Microcornea?
Definition. A congenital abnormality of the cornea in which the cornea and the anterior segment of the eye are smaller than normal. The horizontal diameter of the cornea does not reach 10 mm even in adulthood. [ from HPO]
What is snowflake cataract?
Diabetic cataract, or “snowflake” cataract, consists of gray-white subcapsular opacities. This type of cataract is seen, in rare cases, in patients with uncontrolled diabetes mellitus.
What are sunflower cataracts?
a cataract caused by excessive intraocular copper. Synonym(s): copper cataract, sunflower cataract. A descriptive term for the radiating orange-tinted anterior capsular and subcapsular opacities in the lens due to copper deposition, seen in adolescents with Wilson’s disease; vision is unaffected.
What is the difference between Phacomorphic and Phacolytic glaucoma?
Phacomorphic glaucoma: Also associated with hypermature cataract formation, the key differentiating feature is gonioscopically closed angle and a shallow anterior chamber in phacomorphic glaucoma. Phacolytic glaucoma has a pronounced anterior chamber inflammatory component.
What are the 3 types of cataract?
There are three primary types of cataracts: nuclear sclerotic, cortical and posterior subcapsular.
- Nuclear Sclerotic Cataracts.
- Cortical Cataracts.
- Posterior Subcapsular Cataracts.
What do cataracts mean?
Cataracts are the clouding of the lens of your eye, which is normally clear. Most cataracts develop slowly over time, causing symptoms such as blurry vision. Cataracts can be surgically removed through an outpatient procedure that restores vision in nearly everyone.
What is anterior lenticonus?
Anterior lenticonus is a rare condition in which the lens presents a conical protrusion of its anterior cortex.
What is Nanophthalmos?
Nanophthalmos is a rare genetic disease, included in the spectrum of developmental eye disorders, characterized by a small eye secondary to compromised growth.
What are Guttata?
What is Guttata? Endothelial Guttata, also known as Fuch’s Dystrophy, is the gradual deterioration of endothelial cells–which help pump excess water through the cornea. When this layer fails, parts of the cornea can swell, blister and distort vision.
What is a sunflower cataract?
Sunflower cataract (SC) is considered a second ophthalmic sign of WD and has been called pathognomonic for WD [8–14]. SC consists of a thin, centralized opacification that is located directly under the anterior capsule and encompasses between one-third and one-half of the anterior lens pole surface area.
What is Chalcosis?
Chalcosis has been described as a chronic reaction to copper alloys with a copper content less than 85%. 1 Copper in the eye is mainly deposited in the limiting membranes, but OCT has revealed the presence of these lesions in the superficial retina, and that they are not limited to the internal limiting membrane alone.
What is Phacomorphic?
Phacomorphic glaucoma is the term used for secondary angle-closure glaucoma due to lens intumescence. The increase in lens thickness from an advanced cataract, a rapidly intumescent lens, or a traumatic cataract can lead to pupillary block and angle closure. Phacomorphic glaucoma.
What causes Phacolytic glaucoma?
A form of lens-induced open-angle glaucoma. Caused by the leakage of lens protein (from a mature or hypermature cataract) into the aqueous humor, thereby causing obstruction of aqueous outflow.
What are the 5 types of glaucoma?
Glaucoma and increased IOP
- Primary open-angle glaucoma. Also known as chronic glaucoma, this condition accounts for approximately 90% of cases of glaucoma.
- Acute angle-closure glaucoma.
- Normal-tension glaucoma.
- Secondary glaucoma.
- Childhood glaucoma.
What is another name for glaucoma?
It occurs more commonly among older people, and closed-angle glaucoma is more common in women. Glaucoma has been called the “silent thief of sight”, because the loss of vision usually occurs slowly over a long period of time. Worldwide, glaucoma is the second-leading cause of blindness after cataracts.
What does Brunescent mean?
Adjective. brunescent (comparative more brunescent, superlative most brunescent) Becoming brown in colour.
What is cataract Class 8?
Sometimes due to the formation of a membrane over the crystalline lens of some people in the old age, the eye lens becomes hazy or even opaque. This is called cataract. It results in decrease or loss in vision of the eye. Cataract can be corrected by surgery leading to normal vision.