If, on the other hand, you see multiple overlapping images of the moon, or even multiple images only very slightly offset so the images of the moon's edge appear like a couple (or few) circles not exactly coincident, then you are seeing the astigmatism in your eye. And if you see a ...
The bottom boundary is coincident with a high- amplitude surface and is locally diffractive, marking the top of the acoustic basement of the NWSB. The Paleogene (mainly Oligocene) is characterized by chaotic and discontinuous reflectors with low frequency and various intensities, indicating an ...
The lens has an optical axis which is adapted to be substantially coincident with the optical axis of the eye upon implantation of the lens. The anterior and posterior viewing elements are mounted to move relative to each other along the optical axis in response to force generated by the ...