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Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Eye+(Lond) 2014 ; 28 (4): 488-91 Nephropedia Template TP
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Comparison of spectral domain and swept-source optical coherence tomography in pathological myopia #MMPMID24434661
Lim LS; Cheung G; Lee SY
Eye (Lond) 2014[Apr]; 28 (4): 488-91 PMID24434661show ga
Purpose: To compare optical coherence tomography (OCT) images obtained with swept-source OCT (SS-OCT) and spectral domain OCT (SD-OCT) in pathological myopia. Methods: This is a comparative observational cases series. Five patients with pathological myopia underwent SD-OCT and SS-OCT imaging. SS-OCT was performed using a prototype system (Topcon Medical Systems). SD-OCT was performed using enhanced depth imaging on the Heidelberg Spectralis OCT. The closest corresponding scans from the central subfield were compared. Results: Eight eyes of five patients with pathological myopia were included (mean spherical equivalent: ?16.00±4.70?D). Overall, SS-OCT better visualized retino-choroidal structures. The choroid, inner segment (IS)/outer segment (OS) line, and external limiting membrane (ELM) were clearly seen in a higher proportion of SS-OCT than SD-OCT scans, (P<0.01 for all) whereas visualization of the sclera and retinal pigment epithelium (RPE) were similar. SS-OCT demonstrated foveoschisis in four eyes, with one of these not visible on SD-OCT. The wider SS-OCT scan revealed additional pathology not visible using SD-OCT along the staphyloma walls in 4/8 images. These included incomplete posterior vitreous detachment in one eye and peripheral retinoschisis in 3/8 eyes. Vitreoschisis was visible in 3/8 SS-OCT images but not in the SD-OCT images. Conclusion: SS-OCT is useful for imaging the posterior staphyloma of pathological myopia, providing greater detail than SD-OCT.