ResultsNear Visual Acuity and readingThe major difficulty in

If you use simple lenses, (which are grinded from only one piece of glass) as objectiv lens (for example the home magnifiers), the result will always be this poor optical quality. But the complex achromates (made of min. 2 parts, different glass materials, with sophistically designed curves and other tricks) may be too expensive for an amateur astronomer, so here are the tricks to improve a bit the imaging of these simple and cheap lenses.

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3d vr glasses A similar training protocol resulted in robust gains in perceptual functions, such as percent correct, sensitivity and faster reaction time in young participants13. Thirty subjects completed 37.4 10.7 (mean std) sessions over a 3 months period. In order to assess the effects of the training, we pre and post tested our subjects on a number of behavioral tests (visual acuity, reading speed, contrast detection and contrast discrimination) as well as on tests of accommodation, pupil size and depth of focus (see Methods).ResultsNear Visual Acuity and readingThe major difficulty in presbyopia is reading small print. 3d vr glasses

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