By Carl D. Regillo MD
Experiences the elemental anatomy of the retina and diagnostic methods to retinal disorder. contains vast examinations of issues of the retina and vitreous, together with disorder, irritation, hereditary dystrophies, abnormalities and trauma. Discusses laser remedy and vitreoretinal surgical procedure. final significant revision 2008-2009.
Read or Download 2011-2012 Basic and Clinical Science Course, Section 12: Retina and Vitreous (Basic & Clinical Science Course) PDF
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Extra resources for 2011-2012 Basic and Clinical Science Course, Section 12: Retina and Vitreous (Basic & Clinical Science Course)
1 991;98:1139~ 1142. Indocyan ine Green Angi ography lndocyanine green (leG) is a wate r-soluble, tricarbocyanine dye with a molecular weight of 775 daltons that is almost completely protein-bound (98%) after intravenous injection . Because it is protein-bound, d iffusion through th e small fenestrations of the choriocapillaris is limited. The retention of leG in the choroidal circulation, coupled with low permeability, makes leG angiography ideal for imaging choroidal circulation. le G is m etabolized in the liver an d excreted into the bile.
The amplitude of these voltage shifts is proportional to the actual voltage across the eye. An international standard technique for recording the electro-oculogram (EOG) defines the optimal placement of electrodes, the time of adaptation, and the intensity of the light stimulus, which depends on whether the pupils are dilated. Arden proposed that, for clinical purposes, a ratio be derived from the highest point of the light peak and the lowest point of the baseline in the dark. 85 or above, although variation among individuals is consider- able.
Fluorescein is injected into a peripheral vein and enters the ocular circulation via the ophthalmic artery 8-12 seconds,later, depending on the rate of injection and the patient's age and cardiovascular status. The retinal and choroidal vessels fill during the transit 22 • Retina and Vitreous phase, which ranges from 10 to 15 seconds. Choroidal filling is characterized by a patchy choroidal flush, with the lobules often visible. Because the retinal circulation has a longer anatomical course, these vessels fill after the choroidal circulation.
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