ABO Questions and Answers with Certified Solutions

ABO Questions and Answers with Certified Solutions The ability of the eye to focus on objects at different distances Accommodation Fresnel optics Press on prism Frame material that resist stretching with heat Nylon Bridge type that spreads weight over the greatest area Saddle Amount of jump image is not affected by The seg inset Double vision Diplopia Modern AR coated lenses transmit how much light 99.5% Shortest wavelength Violet The condition where Rays of light focus behind the retina Hyperopia Condition where pressure inside the eye is dangerously high Glaucoma In the frame boxing system,the distance from right lens geometric center to left lens geometric center Frame PD G-15 Lenses transmit how much light 85% What type of temple is best for active kids Riding bow Heating a Zyl frame and quenching it in cold water causes it to Shrink How many inches is .5 meters 19.7 10 inches is approximately how many meters 1/4 The index of refraction of a material The speed of light in air divided by the speed light in the material The multiple anti reflective of an AR lens stack are designed to Cause destructive interference to different light colors What kind of distortion is characteristic of a high minus lens Barrel When calculating vertical imbalance, what does NOT need to be considered Cylinder power in the 90 degree meridian The index of refraction is lowest in Air Light changing direction when passing from one clear medium to another Refraction The wave particle duality means that light Displays both particle and wave behavior Cloudiness of the crystalline lens Cataract A patient with a PD of 65 chooses a 54-18 frame. What will the decentration be in each eye 3.5mm in Patient PD > Decentration is out Patient PD < Decentration is in Light passing through a prism is bent toward Base What type of lens surface cannot be accurately measured with a lens clock Aspheric Which has the longest wavelength Red The wavelengths of light visible to humans is between 380 and 750 nonometers A -6.50 lens decentered 2 mm results and how much prism 1.3 Lens power tolerance standards are defined by ANSI The agency that regulates eye glasses and contact lenses FDA What is the minimum center thickness for a minus lens in a pair of industrial safety glasses 3.0 mm Plastic and tempered glass lenses are considered to be Impact resistant Which tint color most strongly absorbs blue light Yellow Polarized lenses are most effective at blocking Horizontally polarized glare Invisible bifocals can be described as Vanity lens The Gelatinous material filling the central cavity of the eye Vitreous humor A right eye obviously turning to the right is an example of Exotropia Lensometers give accurate reading when ▪️the eyepiece is focused ▪️properly calibrated Looking below center of a minus lens results in base __ prism Down An instant temperature check of the salt pan can be made with a Finger The lighted lines that get focused in a lensometer Mires Excessive base down prism OU can cause Feeling of walking down a hill Corrected curve lenses attempt to maintain ocular curves between -4.00 to -6.00 The rule of thumb for minus lenses is to add approximately __ to the lens power to get the base curve +6.00 To adjust nose pad arms opticians use ▪️nose pad pliers ▪️chain nose pliers To raise the frame Lower the nose pads How much light is reflected from a CR - 39 lens surface 4% A lens with a focal length of .5 meters has a power of 2D A lens front surface curve is +4.25 and the back surface curve is -7.00 -.50 X 65. What is the lens power? -2.75 - 0.50 X 65 Lens clocks are calibrated to an index of 1.53 For most frames, standard pantoscopic angle Is between 8 and 15 degrees from vertical Occurs when reading ▪️pupils constrict ▪️ eyes converge ▪️lens accommodates How many muscles control the movement of the eye 6 When transposing an Rx, the add power Stays the same Reverse slab off always uses __ prism in the lens with the __ in the 90° Meridian Base down,most plus Trifocal lenses should be fit at the Lower edge of the pupil Which lens color level is the darkest D Which frame material is most hypoallergenic Titanium What adjustment is appropriate for a pair of glasses that is too close to the patients left side Angle the left temple inward