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WorksheetsOphthalmic Optics quiz
Total questions: 10
Worksheet time: 60secs
Which is not the types of spherical lenses?
convex
concave
plane/flat
rough
Which of the following statement is CORRECT regarding characteristic of spherical lens?
Convex lens thicker at the edge compare at the center lens
Concave lens thicker at the center compare at the edge lens
Convex lens is a converging lens
Convex lens bend the light outwards
A lens that has a flat front surface and a concave back surface, has _______ power.
plano
minus
plus
zero
Divide the 6 Δ BI between the right eye (RE) and left eye (LE).
RE 3 Δ BI and LE 3 Δ BI
RE 6 Δ BI and LE 6 Δ BI
RE 3 Δ BI and LE 3 Δ BO
RE 3 Δ BO and LE 3 Δ BI
The image seen through a prism is _______
displaced towards the base of the prism
displaced towards the apex of the prism
displaced up
displaced down
For a distance correction of +3.00 DS and a pupillary distance (PD) of 66/62, the prismattic effect at near PD caused by distance power is
0.4 Δ BO
0.6 Δ BO
0.8 Δ BO
1.0 Δ BO
Which is NOT TRUE regarding the characteristic base curve of toric surface?
the highest powered curve of toroidal surface
the lowest powered curve on a spherical lens
the common curve in a lens series
the front curve in a multifocal lens
The following are types of spectacle frames, EXCEPT
semi-rimless frame
plastic full frame
rimless frame
heavy metal full frame
Which of the following is INCORRECT in determining the lens type?
the weight of the material
the sound of the material
the color of the lens
the price of the lens
What is the system of British standard used for frame measurement?
Box system
Line system
Datum system
Optics system
