Comparison of Repeatability Between SS and SD-OCT for Measuring Retinal Thickness in Various Retinal Diseases

Comparison of Repeatability Between Swept-source and Spectral-domain Optical Coherence Tomography for Measuring Inner Retinal Thickness in Various Retinal Diseases

Comparison of intradevice repeatability of thickness measurements for macular area in the eyes with normal and various retinal diseases using SS-OCT and SD-OCT

The investigators studied the intradevice repeatability of thickness measurements for total retina, retinal nerve fiber layer (RNFL) and ganglion cell-inner plexiform (GC-IPL) layers of macular area in the eyes with normal and various retinal diseases using SS-OCT and SD-OCT and compared the repeatability between two devices.

Inclusion Criteria:

• Age-matched normal group was composed of subjects with age over at least 19 years,
• a best-corrected visual acuity of 20/25 or higher,
• normal fundus and intraocular pressure (IOP) < 21mm Hg.

Exclusion Criteria:

• an spherical equivalent (SE) larger than ± 6 D,
• cataract graded as more severe than grade 3 (Lens Opacities Classification System III),
• a history of glaucoma and optic nerve diseases, or a history of vitrectomy.