Help!
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| A new bifocal where should A. drop the eyes to see the for the floor. B. drop the chin to read C. drop the ice to read | Drop the eyes to read
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| What is the MBS possible for a 50 mm round size frame if the lens must be decentered 3 mm | 56 millimeters
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| A frame has the dimensions 49/19 with ED of 52 millimeters. The PPD is 68 millimeters. What is the MBS required | 52 millimeters
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| Round segments should be fitted ____ then FT segs | Higher
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| If a person keeps his head back, his bifocal should be set slightly ______ than normal | Lower
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| Pantoscopic tilt is when | The lower part of the eye wire is closer to the face than the upper part
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| A PPD is 63 /57. Fpd is 68. Seg height is 20. ED is 53. The B measurement is 50. What is the MBS for a bifocal | 64 millimeters
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| What is the standard intermediate add | 50% of the reading add
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| The lensometer reads -1.00 - 1.00 x 80 in the distance portion. + 1.50 - 1.00 x 180 in the near Portion. What is the add | 2.50 diopters
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| RX of a patient is OU -0.50 - 0.25 x 180 add + 2.00. The wearer wants a reading glass what power should be ordered? | OU +1.50-0.25Ã180
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| RX OU + 2.00 - 0.50 x 90 add + 2.50 frame measurements are 48 / 20 B 44 Ed 54 PPD 75/ 71 say height 25 what are the horizontal decentration, vertical decentration, and MBS for a flat top 28 | 1.5 millimeters out, three millimeters up, MBS 60
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| A piano player at his optician for a pair of spectacles to see the notes that are in arm length away. What should the optician recommend | Single Vision intermediate lenses
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| A lens has a flat top trifocal segment in the lower part and an upside down flat top in the upper half this is a | Quadrofocal lens
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| This trifocal is for a computer programmer | CRT trifocal
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| A flat top 28 bifocal where begins a new RX and chooses a new frame. The audition measures the same height with the new frame on. He reads 20 millimeters. The patient wears a flat top 28 but the safe height is 14 and save line is 5 millimeters below the l | 15 millimeters
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| B measurement is the | Largest vertical measurement of the frame
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| A-frame is marked 52 18. The lens shape is round. What is the ED of a lens | 52
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| A 50 year old Private Pilot with the RX of oh you + 2.00 - 0.50 x 180 add 2.00 wants a pair of spectacles to use when flying in his plane. Which of the following lens designs would you recommend | Double D
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| 7 x 28 means | A flat top 28 bifocal
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| A patient has a round 22 and complains of image jump what would you recommend | A flat top 28
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| In a flat top 28 the optical center of the segment is located | 5 millimeters below the line
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| All of the following bifocals had image jumps except: A flat top 28, B round 22. C executive | Executive
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| Which of the following multifocal lenses Style is not an occupational lens A) CRT 14Ã35, B) ED 8 x 25, C) ED 13 x 25 | ED 8 x 25
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| The usual depth of the intermediate segment of an executive trifocal is | 7 millimeters
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| What would you recommend to a golf player who wants a pair of glasses to play and to write the scores | Round 22
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| The bifocal line should be | Parallel to the lower eyelid margin
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| Bifocals are used for | Presbyopes
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| Which PD do we use to calculate horizontal decentration for a bifocal | Near PD
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| What is frame difference | Difference between horizontal and vertical measurement
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| OD +2.00-1.00Ã80 OS Plano -1.00 Ã 90 ADD 2.50. What is the standard intermediate prescription | OD +4.50-1.00Ã 80. OS +2.50-1.00Ã90
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| A flat top bifocal where complains of segments being too high. The optician examine the patient. The segment line seems to be on the lower eyelid margin. What can the optician do first to help his customer | Decrease the vertex distance
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| If the patient's PD is larger than the fpd comma the PD decentration is | Out
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| If the OC HT is lower then be divided by two comma the vertical decentration is | Down
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| What is it called when the declining of accommodation occurs with age | Presbyopia
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| What is the focusing organ of the eye | Crystalline lens
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