Purpose: To determine interocular differences in retinal parameters in a population of young adults using spectral-domain optical coherence tomography. Methods: In the Sydney Adolescent Vascular Eye Study, young adults aged 16 to 19 years received a standardized eye examination encompassing retinal photography, spectral-domain optical coherence tomography (Cirrus HD-OCT; Carl Zeiss Meditec, Dublin, CA) and best-corrected visual acuity. Interocular differences in retinal nerve fiber layer (RNFL) and macular parameters together with sex and ethnic variations for these differences were determined. Results: In the 1500 subjects tested, right eyes had thicker average RNFL than left eyes (0.3 [mu]m, P=0 ...

Purpose To determine normative values and associations of retinal nerve fiber layer (RNFL) and optic disc parameters in normal eyes measured by spectral domain optical coherence tomography (OCT). Methods In a population-based setting, 1521 young adults were examined as part of the Sydney Adolescent Vascular and Eye Study (SAVES). Their mean age was 17.3±0.6 years. RNFL and optic disc parameter measurements were made using Cirrus HD-OCT 4000. Results The average RNFL was found to be 99.4±9.6   μ m. RNFL thickness was least for the temporal quadrant (69.9±11.2   μ m), followed by the nasal ...

An 83-year-old man was referred for left main coronary artery (LMCA) stenting (Fig. 1A). After predilation, a 3.5 × 16-mm Promus™ drug-eluting stent (Boston Scientific Corporation; Natick, Mass) was deployed across the distal LMCA at a pressure of 16 atm (estimated diameter, 3.8 mm) (Fig. 1B). Optical coherence tomography (OCT) was performed after stent deployment (Fig. 1C). This measured the mean vessel diameter at 3.8 mm (area, 11.8 mm2) but, importantly, showed clear proximal malapposition of stent struts in the distal LMCA of up to 290 pm (Fig. 1C). Further balloon inflation of a 4 × 9-mm NC ...

Abstract: All optic nerve pathologies, including the glaucomas and disorders such as non-arteritic ischemic optic neuropathy, affect the appearance of the optic nerve head. Morphological examination of the optic nerve head in a qualitative and quantitative manner is therefore clinically mandatory. With the advent of modern imaging modalities such as confocal scanning laser tomography and optical coherence tomography, new diagnostic avenues have opened up to further refine the examination. The new imaging devices are now becoming a major adjunct to the diagnosis and long-term management of optic nerve head pathology; before it is possible to identify an abnormal optic disk ...