ABO Practical final test with answers updated

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ABO Practical final test with
answers updated




1. Whatbisbthebverticalbdifferencebinbpowerbbetweenblensesbinbthebfollowingb
Rx:bO.D.b-1.00b+0.50bx045
O.S.b-1.00b+0.50bx090

A. 0.75Dbsph
B. 0.50Dbsph
C. 0.25Dbsph
D. Nobdifference:bC.b0.25Dbsph
2. Abpupillarybdistancebgroundbtoobwidebforbabplusbprescrip
tionbwillbresultbinbprismbbase .
A. UP
B. OUT
C. DOWN
D. IN:bB.bOut
1b/

,3. Whatbisbsagittalbvalue?
A. Thebdistancebfrombthebfrontblensbsurfacebtobitsbprimarybfocalbpoint
B. Thebdistancebfrombthebocularblensbsurfacebtobitsbsecondarybfocalbpoint
C. Thebdistancebfrombthebfrontbvertexbofbablensbtobthebchordbformedbbybthebba
ckbplanebofbtheblens
D. Thebcurvaturebinbdioptersbofbthebbasebcurvebofbtheblens:bB.bThebdistancebf
rombthebocularblensbsurfacebtobitsbsecondarybfocalbpoint
4. Howbmuchbcylinderbpowerbdoesbabcylinderbhavebalongbitsbownbaxis?
A. 0%
B.b25%
C.b50%
D.b100%:bA.b0%
5. Whichbofbthebfollowingbvariablesbdobnotbaffectbthebthicknessbofbtheblens?
A. RefractionbIndex
B. FramebSize
C. FramebMaterial
D. LensbShape:bC.bFramebMaterial
6. Ifbtheblensesbofbabpatientbwearingb-
15.00bspheresbarebbroughtbcloserbtobhis/
herbeyes,bwhatbeffectbwillbthisbhavebonbthebeffectivebpower?
A. Increasedbminusbpowerbeffect
B. Decreasebminusbpowerbeffec
tbCbBasebinbprismaticbeffect
D.bBaseboutbprismaticbeffect:bA.bIncreasingbminusbpowerbeffect
7. 'Plano'bmeans
A. Myopia




2b/

,B. Hyperopia
C. Astigmatism
D. Nobcorrectionbneeded:bD.bNobcorrectionbneeded
8. Whichbofbthebfollowingbcombinationsbofbprismbisbabcancellingbsituation?
A. BasebUPbandbBasebDown
B. BasebInbandbBasebDown
C. BasebInbandbBasebOut
D. BasebOutbandbBasebOut:bC.bBasebinbandbBasebout
9. WhatbdoesbODbonbanbeyeglassbprescriptionbdenote?
A. Rightbeye
B. Leftbeye
C. Bothbeyes
D. Eitherbrightborbleftbeye:bA.brightbeye
10. Whatbisbthebtotalbpowerbatbaxisb090binbablensbwithbabpowerbof
+1.00b+2.50bx045
bA.b+1.00D

B.b+2.00
DbC.
+2.25D
D.b+2.50D:bD?
11. GivenbthebRx:b+1.00b+1.00bx045,bhowbmuchbofbtheb+1.00bcylinderbisbinbeff
ectbatbaxisb090
A.b100%
B.b70%
C.b50%
D.b0:bC.b50%
12. Plusblensesbhaveba focalbpoint
A. Virtual
B. Real
C. Arbitrary
D. Complex:bB.bReal
13. Ablensbdispersingbwhiteblightbintobitsbcomponentbcolorbisbabresultbofbwh
atbaberration?
A. Achromaticbaberration
B. Isochromaticbaberration
C. Chromaticbaberration
D. Comababerration:bC.bChromaticbaberration
14. Whatbisbthebfocalblengthbofbab2.00bdiopterblens?
A. 500cm

3b/

, B. 39.37binches




4b/