ABO PRACTICE EXAM PART ONE Qs&As

the wavelength of the infrared waves in the electromagnetic spectrum are longer than visible red light waves the Geneva Lens Measure is calibrated for a refractive index of 1.530 A lens made from 2 convex surfaces has against motion A lens reads +4.25D in the vertometer. If the ocular curve is -4.00D, what is the front base curve? +8.25D Which of these front base curves would be suitable for a -300D meniscus lens? +4.50 A tinted lens will absorb visible light, infrared and ultra violet becasue of appropriate chemicals added during manufacturing and its density the ability of the eye to focus objects at varying distances is called accommodation the cornea is continuous with the sclera which of the following is not ametropia strabismus the macula is positioned on the retina an opacity in the lens causing a reduction in vision is called cataract a simultaneous movement of both eyes in opposite directions is called vergence in order for the cornea to maintain transparency, it must have a liquid environment imbalance of aqueous humor in the anterior chamber results in glaucoma binocular vision allows an individual to have fusion, have a perception of depth, and have an enlarged field of view the ability of the eye to turn out is called abduction the color sensors of the eye are called cones a frame that measures 54 prism 20 with an E.D. or 57mm is selected by a person for a single vision lenses. if each lens must be decentered 5mm in, then the minimum blank size needed to complete this job is 68mm what lens power in the 90th meridian for this lens prescription: +3.00 +1.00 x 180 +4.00 if three identically shaped meniscus convex lenses are made, one from each of these ophthalmic materials: ophthalmic crown, polycarbonate and CR-39, which will read the strongest plus power in the lensometer? polycarbonate a patient refractd at 8mm is prescribed a +10.00 lens. The fitted vertex is 13mm. The recomputed (compesated) lens power is +9.50 base curve can be defined as the curve used as a basis for surface curves