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Tetralogy of Fallot (TOF), formerly known as Steno-Fallot tetralogy, [9] is a congenital heart defect characterized by four specific cardiac defects. [4] Classically, the four defects are: [ 4 ] pulmonary stenosis , which is narrowing of the exit from the right ventricle;
The Trilogy of Fallot also called Fallot's trilogy is a rare congenital heart disease consisting of the following defects: pulmonary valve stenosis, right ventricular hypertrophy and atrial septal defect. [1] It occurs in 1.2% of all congenital heart defects. [2]
AC 1/4: Grade 1 anterior chamber angle: AC 0/4: Grade 0 anterior chamber angle: closed angle between cornea and iris AC/A: Accommodative convergence / Accommodation ratio the portion of the range of convergence that occurs in response to accommodation: Acc: Accommodation: process of changing optical power to maintain focus as distance changes ...
[2] [4] While the axis of an adult human eye has an average length of about 23.8 mm (0.94 in), a diagnosis of microphthalmia generally corresponds to an axial length below 21 mm (0.83 in) in adults. [ 3 ] [ 5 ] Additionally, the diameter of the cornea is about 9–10.5 mm (0.35–0.41 in) in affected newborns and 10.5–12 mm (0.41–0.47 in ...
Coloboma in the right eye of a 10-month-old child. There are two categories in which the signs of congenital blindness can be classified. The first category pertains to consistently poor vision, such as not displaying preferential looking when presented with high-contrast visual stimuli. [6]
In 1888 Fallot described in detail the four anatomical characteristics of tetralogy of Fallot, a congenital heart defect responsible for blue baby syndrome. [7] [8]
A test called the Bielschowsky Darkening Wedge Test can be used to reveal and diagnose the presence of dissociated vertical deviation, although any (or no) amount of dissociative occlusion may also prompt it to occur. The patient is asked to look at a light. One eye is covered and a filter is placed in front of the other eye.
Long QT syndrome (LQTS) is a condition affecting repolarization (relaxing) of the heart after a heartbeat, giving rise to an abnormally lengthy QT interval. [7] It results in an increased risk of an irregular heartbeat which can result in fainting, drowning, seizures, or sudden death. [1]