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Frequency. ~2% (children) [ 3] Strabismus is a vision disorder in which the eyes do not properly align with each other when looking at an object. [ 2] The eye that is pointed at an object can alternate. [ 3] The condition may be present occasionally or constantly. [ 3] If present during a large part of childhood, it may result in amblyopia, or ...
Retinoblastoma (Rb) is a rare form of cancer that rapidly develops from the immature cells of a retina, [ 2] the light-detecting tissue of the eye. [ 3] It is the most common primary malignant intraocular cancer in children, especially those under 3 years old. [ 4][ 5] Though most children in high income countries survive this cancer, [ 2] they ...
Conception. Studies report that three primary structures are formed in the sixth gestational week. These are the forebrain, the midbrain, and the hindbrain, also known as the prosencephalon, mesencephalon, and the rhombencephalon respectively. Five secondary structures originate from these in the seventh gestational week.
Specialty. Ophthalmology. Exotropia is a form of strabismus where the eyes are deviated outward. It is the opposite of esotropia and usually involves more severe axis deviation than exophoria. People with exotropia often experience crossed diplopia. Intermittent exotropia is a fairly common condition. "Sensory exotropia" occurs in the presence ...
Gestational age: 3 weeks and 0 days until 3 weeks and 6 days old. 22–28 days from last menstruation. Embryonic age: Week nr 2. 1 week old. 8–14 days from fertilization. Trophoblast cells surrounding the embryonic cells proliferate and invade deeper into the uterine lining. They will eventually form the placenta and embryonic membranes.
A brain tumor occurs when abnormal cells form within the brain. [ 2] There are two main types of tumors: malignant (cancerous) tumors and benign (non-cancerous) tumors. [ 2] These can be further classified as primary tumors, which start within the brain, and secondary tumors, which most commonly have spread from tumors located outside the brain ...
Glioblastoma, previously known as glioblastoma multiforme ( GBM ), is the most aggressive and most common type of cancer that originates in the brain, and has a very poor prognosis for survival. [ 6][ 7][ 8] Initial signs and symptoms of glioblastoma are nonspecific. [ 1] They may include headaches, personality changes, nausea, and symptoms ...
Photos of what pregnancy tissue from early abortions at 5 to 9 weeks actually looks like have gone viral.. The images, which were originally shared by MYA Network — a network of physicians who ...