We demonstrate a simple waveplate analyzer to characterize linear retarders using magneto-optic (MO) polarization rotators. The all-solid state device can provide highly accurate measurements for both the retardation of the waveplate and the orientation of optical axes simultaneously.

We describe an efficient double-filtering method that uses a single acousto-optic tunable filter (AOTF) to improve the spectral resolution and intrinsic sidelobes for the spectral domain analysis systems. Double filtering with a single AOTF is realized by applying a unique feedback scheme based on the fact that incident light can be diffracted into two orthogonally polarized beams of light by a...

BACKGROUND Maintaining functional fitness is an important problem in elderly people. Effective balance control is one of its main aspects. Evaluation and diagnosis of the weakest link in balance control (especially in this age group) facilitates appropriate prevention and rehabilitation. The goal of this study was to determine the role of the optic teleceptor and proprioception in maintaining b...

Optic flow is a key signal for heading perception. A new study has shown that the human brain can dissociate between consistent (natural) and inconsistent flow, revealing what is likely a new hierarchy in visual motion processing.

PURPOSE To compare optic disk and retinal nerve fiber layer (RNFL) imaging methods to discriminate eyes with early glaucoma from normal eyes. DESIGN Retrospective, cross-sectional study. METHODS In a tertiary care academic glaucoma center, 92 eyes of 92 subjects (46 with early perimetric open-angle glaucoma and 46 controls) were studied. Diagnostic performance of optical coherence tomograph...

From a comparison of the results obtained by examining 'monocular' and 'stereoscopic' photographs of the optic disc it was concluded that each afforded similar levels of accuracy in identifying glaucomatous visual field defects.