What causes Phacomorphic glaucoma?
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.
What is Phacomorphic glaucoma?
Phacomorphic glaucoma is a lens-induced secondary angle closure glaucoma that may occur as a result of mature cataract formation.
How is Phacomorphic glaucoma diagnosed?
To assist the diagnosis of phacomorphic glaucoma, the physician may use A-scan biometry and ultrasound biomicroscopy to determine the depth of the anterior chamber and the thickness of the crystalline lens. The treatment of phacomorphic glaucoma may require the use of medical therapy or laser and incisional surgery.
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 is Pseudoexfoliation glaucoma?
Glaucoma develops in some patients with a condition called exfoliation syndrome. Also known as pseudoexfoliation, it is caused by the abnormal accumulation of protein in the drainage system and other structures of the eye. This is a type of open-angle glaucoma with unique characteristics and physical findings.
What is Ghost cell glaucoma?
Ghost cell glaucoma is a secondary open-angle glaucoma caused by degenerated red blood cells (ghost cells) blocking the trabecular meshwork.
Does cataract cause glaucoma?
Cataracts do not typically lead to glaucoma, however there are many shared risk factors and the two conditions may be discovered at the same time. The reverse is also true, glaucoma does not lead to cataracts. However, there are rare conditions in which glaucoma treatment may accelerate cataract development.
Which cataract causes glaucoma?
Do Cataracts Cause Glaucoma? Cataracts do not cause glaucoma per se, although there are certain rare forms (outside the scope of this discussion) in which the cataract is the causative factor of elevated eye pressure and damage to the optic nerve.
What type of cortical cataract causes Phacolytic glaucoma?
Phacolytic glaucoma may be caused by the following:
- Mature cataract (totally opacified)
- Hypermature cataract (liquid cortex and free-floating nucleus)
- Focal liquefaction of immature cataract (rare)
- Dislocated cataractous lens in vitreous.
Does pseudoexfoliation always lead to glaucoma?
If you have pseudoexfoliation syndrome, does that mean you will develop glaucoma? Although there are patients in whom pseudoexfoliation material is seen but there is no sign of glaucoma, it is estimated that approximately 40 – 50 percent of patients who have pseudoexfoliation syndrome will eventually develop glaucoma.
Is there such a thing as phacomorphic glaucoma?
Phacomorphic glaucoma is a lens-induced secondary angle closure glaucoma that may occur as a result of mature cataract formation.
Can a phacolytic glaucoma be a clinical diagnosis?
While phacolytic glaucoma is a clinical diagnosis, microscopic examination of aspirated anterior chamber fluid can aid in suspected cases. Biochemical studies can help identify high-molecular-weight lens proteins that have leaked out of the cataract.
What are the different types of lens induced glaucoma?
Lens induced glaucoma. Introduction. Lens-induced glaucoma may occur as either secondary angle-closure or open-angle glaucoma.The angle-closure can be caused by lens swelling (phacomorphic glaucoma) or lens dislocation (ectopia lentis).
What causes primary and secondary angle closure glaucoma?
Primary angle-closure glaucoma occurs from pupillary block or plateau iris syndrome. Secondary angle-closure glaucoma is due to an anterior pulling mechanism (eg, iridocorneal endothelial syndrome, neovascular glaucoma) or a posterior pushing mechanism (eg, phacomorphic glaucoma, posterior segment tumor).