![]() ![]() Exact cause is unknown one school of thought states it to be a manifestation of peripheral vitreous traction while one believes it to be simply an abnormal reflex from a structurally normal VR interface.Characteristics: Whiter than the retina in white with pressure and the choroidal markings are almost obscured, found in post-equitorial region at the base of the vitreous and ora serrata, whiteness further accentuated with scleral depression, margins are sharply demarcated from normal retina.Prevalence: found in up to 30% of normal eyes, often bilateral, more frequently diagnosed in younger patients, may be associated with longer axial length.Definition: Distinctive white appearance of the peripheral retina without indentation and without mechanical stimulus.Treatment: should be treated when patients are symptomatic, or there is progressive retinal detachment threatening the macula.Diagnosis: OCT findings include intraretinal hyporeflective cavities with destruction and thickening of the RPE.Primary cause of retinal detachment in 0.05-2.5% of cases.Complications: may involve posterior pole, may lead to retinal detachment.Immobile with movement of eye and produces an absolute field defect.Characteristics: Lesion is a bullous elevation of peripheral retina, found in temporal segment.Prevalence: found in 2-7% of the general population, more common in patients 40 years and older and in hyperopic eyes.Definition: senile retinoschisis (SR) is the splitting of layers of the neurosensory retina by thick fluid.Intra-Retinal Degenerations Senile Retinoschisis Therefore, OCT should be utilized in the initial diagnosis, treatment, and follow-up for peripheral retinal degenerations. Peripheral OCT may further aid in differentiation between types of peripheral retinal degeneration as well associated complications including subclinical retinal detachment, retinoschisis, retinal tears and vitreoretinal adhesions or tractions. Such detail includes the structure, shape and depth of retinal degenerations. Optical coherence tomography (OCT) has been shown to greatly benefit in the diagnosis of peripheral retinal degenerations by characterizing structural elements. Chorioretinal degenerations: paving stone degeneration and peripheral retinal drusen.Vitreoretinal degenerations: lattice degeneration, snail-track degeneration, retinal tufts, and peripheral retinal breaks.Intra-retinal Degenerations: senile retinoschisis, white-without-pressure, white-with-pressure, dark-without-pressure, peripheral cystoid degeneration, snowflake degeneration, and pearl degeneration.The following are the commonly used classifications of peripheral retinal degenerations based upon depth of retinal changes observed on optical coherence tomography (OCT): Depth of retinal changes- intraretinal, retinal, vitreoretinal, or chorioretinal.Pathomorphology- trophic, tractional, atrophic, or combined.Location- equatorial, peripheral, or combined.Peripheral retinal degenerations are classified according to the following criteria: 1 Classification of Peripheral Retinal DegenerationsĬlassification of Peripheral Retinal Degenerations.If you have a history of lattice degeneration, you should be aware of the symptoms of retinal tears and detachment. Preventive treatment of lattice degeneration has not been shown to prevent retinal detachment, but lattice degeneration should be monitored. Lattice degeneration can sometimes cause retinal detachments when holes or tears in the lattice formation permit vitreous fluid to get under the retina.įortunately, most people with lattice degeneration do not develop a retinal detachment. If part of the vitreous sac becomes detached from the retina, the friction and pulling where it is still attached can create a tear in the retina. ![]() This pulling weakens the retina and creates lattice lesions that look like white crisscrossing lines on the retina. In lattice degeneration, there are places where the sac is strongly attached to the retina and pulls on it. As one ages, the vitreous takes on a more fluid consistency and the sac sometimes separates from the retina. The vitreous, a clear gel-like substance that fills the inside of the eye, is contained in a sac loosely attached to the retina. ![]()
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