Peripheral Retina
Utilizing the Cirrus SD-OCT with HD 5-line raster scans and manipulating the patient’s head, mid-peripheral to peripheral retinal and choroidal lesions can be scanned. SD-OCT allows visualization of retinal conditions including, lattice degeneration, shallow and bullous retinoschisis, operculated retinal holes, and retinal detachments.
Lattice degeneration
Lattice degeneration causes abnormal vitreoretinal abnormalities known to predispose patients to a retinal detachment. The vitreoretinal traction is difficult to appreciate on clinical examination but can be easily visualize with the SD-OCT.
Figure 1. Cirrus SD-OCT 5-line raster horizontal scan over lattice degeneration with atrophic retinal hole and subretinal fluid/shallow subclinicial retinal detachment.
Figure 2. Cirrus SD-OCT 5-line raster horizontal scan over lattice degeneration with atrophic retinal hole and subretinal fluid/shallow subclinicial retinal detachment. Intraretinal cysts are seen secondary to the traction.
Retinoschisis
Degenerative acquired retinoschisis is splitting of the retinal layers. The condition can sometimes be difficult to appreciate on clinical examination especially in shallow compared to bullous retinoschisis. The splitting of the retinal layers can occur in different layers of the retina and can sometimes involve more than one layer as seen in figure 3. Inner and outer retinal holes can occur in the retinoschisis.
Figure 3. Cirrus SD-OCT HD 5-line raster scan in the mid-peripheral retina over a retinoschisis. The retinoschisis involved multiple retinal layers. There is no subretinal fluid or retinal detachment.
Figure 4. Cirrus SD-OCT HD 5-line raster scan over retinal hole with pigmented borders.
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