|
Haab's Striae
Haab's striae, or Descemet's tears, are horizontal breaks in the Descemet membrane associated with congenital glaucoma Primary congenital glaucoma is a rare eye condition that is present at birth or develops early in childhood. It occurs due to improper drainage of the eye's fluids, which leads to increased pressure inside the eye, known as intraocular pressure. Th .... It is named after Otto Haab. These occur because descemet's membrane is less elastic than the corneal stroma. Tears are usually peripheral, concentric with limbus and appear as line with double contour. References External links * Ophthalmology Disorders of sclera and cornea {{Med-sign-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Descemet Membrane
Descemet's membrane ( or the Descemet membrane) is the basement membrane that lies between the corneal proper substance, also called stroma, and the endothelial layer of the cornea. It is composed of different kinds of collagen (Type IV and VIII) than the stroma. The endothelial layer is located at the posterior of the cornea. Descemet's membrane, as the basement membrane for the endothelial layer, is secreted by the single layer of squamous epithelial cells that compose the endothelial layer of the cornea. Structure Its thickness ranges from 3 μm at birth to 8–10 μm in adults.Johnson DH, Bourne WM, Campbell RJ: The ultrastructure of Descemet's membrane. I. Changes with age in normal cornea. Arch Ophthalmol 100:1942, 1982 The corneal endothelium is a single layer of squamous cells covering the surface of the cornea that faces the anterior chamber. Clinical significance Significant damage to the membrane may require a corneal transplant. Damage caused by the hereditary c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Congenital Glaucoma
Primary congenital glaucoma is a rare eye condition that is present at birth or develops early in childhood. It occurs due to improper drainage of the eye's fluids, which leads to increased pressure inside the eye, known as intraocular pressure. This elevated pressure can damage the optic nerve which will result in permanent vision loss. It is also known as pediatric glaucoma or childhood glaucoma, and was previously known as trabeculodysgenesis or goniodysgenesis. Types Primary congenital glaucoma is classified into three subtypes: * true congenital glaucoma, which causes signs of increased intraocular pressure within the first month of life, * infantile glaucoma, which presents between one month and three years, and * juvenile glaucoma, which becomes clinically apparent after three years of age and before age 40. Primary juvenile glaucoma Primary juvenile glaucoma becomes apparent between the ages of 3 and 40. It develops due to ocular hypertension and is diagnosed between t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otto Haab
Otto Haab (19 April 1850 – 17 October 1931) was a Swiss Ophthalmology, ophthalmologist who was a native of Wülflingen, which today is a district in the city of Winterthur. In 1875, he obtained his doctorate from the University of Zurich, where, as a student, he was an assistant to Karl Joseph Eberth in pathological anatomy. In 1886, he succeeded Johann Friedrich Horner as professor of ophthalmology at Zurich, a position he held until 1919. Otto Haab made contributions involving pathological anatomy of the eye, as well as in treatment of eye-related lesions. In 1885 he clinically described what he called senile macular disease, today known as senile or age-related macular degeneration (AMD), and investigated the atrophy, atrophic and pigmentary changes in the macular region of the eye associated with the condition. His name is associated with several medical eponyms, that include: "Haab's reflex", which is another name for pupillary light reflex, and "Haab's magnet", a powerfu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophthalmology
Ophthalmology (, ) is the branch of medicine that deals with the diagnosis, treatment, and surgery of eye diseases and disorders. An ophthalmologist is a physician who undergoes subspecialty training in medical and surgical eye care. Following a medical degree, a doctor specialising in ophthalmology must pursue additional postgraduate residency training specific to that field. In the United States, following graduation from medical school, one must complete a four-year residency in ophthalmology to become an ophthalmologist. Following residency, additional specialty training (or fellowship) may be sought in a particular aspect of eye pathology. Ophthalmologists prescribe medications to treat ailments, such as eye diseases, implement laser therapy, and perform surgery when needed. Ophthalmologists provide both primary and specialty eye care—medical and surgical. Most ophthalmologists participate in academic research on eye diseases at some point in their training and many inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
