ABO PRACTICAL EXAM
WITH VERIFIED
SOLUTIONS
Cancellingceffect-csubtractcprismcamountsc-ccorrectcanswer-BU/BUc
BD/BDc
BI/BO
Powerscbetweenc0.00c&c+/-c3.00c-ccorrectcanswer-Readcinc1/8cdiopters
.12
.37
.62
.87
Lensometerciscalsocreferredctocasc-ccorrectcanswer-
Lensmeter,cfocimeter,cvertometer
Tocfocusceyepiecec-ccorrectcanswer-
1)cwhilecturnedcoff.cPlacecwhitecsheetcofcpapercagainstclenscstop.
2)cturncfocuscringcallcthecwayccountercclockwise,andcthencbackcclockwisecuntilcsharp
.
3)cremovecpapercandcturnclensometercon
4)cmovecpowercdrumctochighcplus,cthencturncawaycfromcyoucuntilcsharp-
cshouldclandcatc0.00.
TocreadcHORIZONTALcprismc-ccorrectcanswer-
Axiscmustcbec@c180°,cifcnot,ctransposecrx.
P=hcmxdc-ccorrectcanswer-Prenticecrule
WITH VERIFIED
SOLUTIONS
Cancellingceffect-csubtractcprismcamountsc-ccorrectcanswer-BU/BUc
BD/BDc
BI/BO
Powerscbetweenc0.00c&c+/-c3.00c-ccorrectcanswer-Readcinc1/8cdiopters
.12
.37
.62
.87
Lensometerciscalsocreferredctocasc-ccorrectcanswer-
Lensmeter,cfocimeter,cvertometer
Tocfocusceyepiecec-ccorrectcanswer-
1)cwhilecturnedcoff.cPlacecwhitecsheetcofcpapercagainstclenscstop.
2)cturncfocuscringcallcthecwayccountercclockwise,andcthencbackcclockwisecuntilcsharp
.
3)cremovecpapercandcturnclensometercon
4)cmovecpowercdrumctochighcplus,cthencturncawaycfromcyoucuntilcsharp-
cshouldclandcatc0.00.
TocreadcHORIZONTALcprismc-ccorrectcanswer-
Axiscmustcbec@c180°,cifcnot,ctransposecrx.
P=hcmxdc-ccorrectcanswer-Prenticecrule