What is considered a large retinal tear?
What is considered a large retinal tear?
Giant retinal tear (GRT) is defined as a full-thickness circumferential break in the neurosensory retina, extending more than 3 clock hours (90°). The majority of GRTs have been described to be idiopathic; however, GRT has been reported after trauma, extensive cryotherapy, photocoagulation and refractive surgery.
What causes giant retinal tear?
Giant retinal tear occurs due to dynamic vitreous traction at areas of retinal abnormality which usually is an area of white-without pressure (WWOP). These areas have dense vitreous condensation and these increase in extent and density over time.
Can an optometrist diagnose a retinal tear?
Optometrist Fails to Diagnose Retinal Detachment.
How do you know you tore your retina?
The sudden appearance of many floaters — tiny specks that seem to drift through your field of vision. Flashes of light in one or both eyes (photopsia) Blurred vision. Gradually reduced side (peripheral) vision.
How to diagnose and treat Giant retinal tear?
In the absence of an associated RD, demarcation of the GRT with laser photocoagulation with or without adjunctive cryotherapy may be considered. One should aim to apply at least 3 concentric rows of confluent white retinal burns along the edges of the GRT.
What is the definition of a g iant retinal tear?
G iant retinal tear is defined as a full-thickness circumferential break in the retina extending more than three clock hours or 90 degrees. 1,2 GRTs arise from liquefaction of central vitreous and peripheral vitreous condensation with concomitant traction at the vitreous base.
Can a GRT be a bilateral retinal tear?
GRTs are bilateral in 12.8% of patients over time, 1,2 although they rarely develop simultaneously. GRTs account for approximately 1.5% of rhegmatogenous retinal detachments (RD), and surgical management of an RD associated with a GRT may be challenging.
Is there 360 degree prophylactic treatment for giant retinal tears?
However, there exists no evidence to support or refute use of 360 degree prophylactic treatment in the fellow eyes. Freeman noted several high-risk characteristics in fellow eyes of giant retinal tears: high myopia (>-10 dioptres), increasing white without pressure areas, and increasing condensation of the vitreous base.