Vision 1: Physiologic Optics Flashcards
1
Q
def. of Nodal point
A
Point at the center of the lens
1
Q
Def. of Focal point
A
Point where light waves meet, behind the lens
2
Q
Def. of focal Length
A
Length between focal point and Nodal Point
3
Q
Visable spectrum wavelength is between
A
400-700 nm
4
Q
Def. of visual axis
A
Imaginary line between Nodal point (center of lens) and fixation point (fovea centralis)
5
Q
Corneal Refractory index
A
1.38
6
Q
Lens refractory index
A
1.42
7
Q
As convexity of lens increases,….
A
Refractive power increases, as there is shorter Focal length
8
Q
Law of Refractive power
A
Refractive power= 1/focal length(m)
