ora serrata


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ora serrata 

The serrated anterior boundary of the retina located some 8 mm from the limbus. At the ora serrata, the retina is firmly adherent to the choroid, which is the reason why a retinal detachment ends here. See ciliary body; retinal dialysis; stria.
References in periodicals archive ?
3 s and 100–200 mW power) was applied from the avascular retina to the ora serrata in all quadrants (360[degrees]) with near-confluent impacts.
Para localizar la enfermedad la retina se divide en 3 zonas concentricas y centradas alrededor del nervio optico: la zona I es un circulo concentrico cuyo radio es 2 veces la distancia del centro de la papila a la macula, la zona II es un circulo concentrico al primero que pasa tangencialmente a la ora serrata nasal, la zona III es una muesca temporal no ocupada por la zona II.
In part 1 of this series (Optometry Today, April 4, 2015, p52-56) that the peripheral retina is the area extending from the equator anteriorly to the ora serrata.
Along a continuum with degenerative retinoschisis, cystoid degeneration refers to clusters of small intraretinal cysts just posterior to the ora serrata.
Examination of the enucleated left eye showed an 11 X 10-mm white tumor (Figure 2) arising in the area of the peripheral retina/ciliary body from the area of the ora serrata temporally (Figure 2, upper right inset).
His first three collections of poetry are Ora serrata retinae (1980), Natura and venatura (1987), and Esercizi di tiptologia (1992), reprinted with new poems in Poesie (1981-1992) e altre poesie (1996).
The peripheral retina thins gradually as it approaches the ora serrata to about 0.
On indirect examination, vortex veins and ampullae serve as useful landmarks to demarcate the equator and the start of the far peripheral retina, which then extends anteriorly to the ora serrata, which appears as a greyish black textured band.
Also known as cobblestone degeneration, this condition is present in about 25% of the population and appears as well defined yellow white patches between the equator and the ora serrata.
Microcystoid degeneration consists of small vesicles set in an area of greyish white retina near the ora serrata.
The ora serrata and pars plana are referred to as the extreme periphery.
In contrast to the rhegmatogenous retinal detachment, which often has a convex, even bullous surface, the typical tractional retinal detachment has a more concave surface and is likely to be more localized, often not extending to the ora serrata.