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While it is technically possible to replace the objective lens, please note that the standard factory lens is adjusted to align precisely with the position of the Intensifier Tube, so that the unit can be focused correctly for both close and far
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Certain breeds such as toy fox terriers, and blue heelers are predisposed to lens luxation, while geriatric patients are prone to this disease. Luxation can be secondary to glaucoma, ocular trauma or spontaneous.
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Big Telecentric lenses, such as TCxx120, TCxx144, TCxx192 and Tcxx240 lenses integrate a large mounting flange which is built-in the mechanics.
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A bifocal lens is a lens that has two different powers within it. An example of this is demonstrated in the Ultra 3x-6x hand magnifier. The large portion of the lens has a magnification of 3x, and the smaller lens, which is molded as an integral
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Aspheric lenses are specially made with non-spherical surfaces, corrected to eliminate spherical aberration, and improve focusing and collimating accuracy. The tooling is quite expensive, but the results are worth it.
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A cloudiness in the lens of the eye that impairs a person's vision is called a cataract. This loss of transparency in the lens of the eye was named cataract when it was believe many centuries ago that the whiteness behind the pupil was caused by a
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Yes, if you want to derive the full benefit of telecentricity. Both incident and transmitted illumination should meet certain collimation criteria.
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Advantages include reading and distance vision without glasses or contact lenses with minimal glare and halos, with excellent day and night vision.
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Removal of the clear lens of the eye (lens replacement surgery) or cloudy lens of the eye (cataract extraction) with replacement using the ReSTOR® lens to restore visual clarity without glasses or contact lenses for both distance and reading vision.
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A. It focuses the image on the retina although it can not change focus like our natural lens does.
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