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39 Cards in this Set

  • Front
  • Back
aperture stop correlate in object space
entrance pupil
aperture stop correlate in image space
exit pupil
physical stop which limits amt of light
aperture stop
ray from the object to the edge of aperture stop
marginal ray
ray from the object to the center of aperture stop
chief ray
imaginary line running through the centers of curvatures of all optical elements in the eye
optic axis
real line normal to the anterior surface of the cornea and passing through the entrance pupil, real pupil, and center of curvature
pupillary axis
visual axis
imaginary straight line from the point of fixation through the nodal point to the fovea
line of sight
real straight line connecting the point of fixation with the center of the entrance pupil
fixation axis
imaginary straight line connecting the point of fixation with the center of fixation
Mnemonic to remember angles for different axis
I I I R R
F O V P L
G A K L
Purkinje im #1
Brightest, formed by anterior cornea
units for luminous power
lumens
units for luminous intensity (I)
lumens/steradian
candelas
units for luminance (L)
candelas/sq m
foot lamberts
units for illuminance (E)
lumens/ sq m
foot candels
Law of Illumination
E=I/d^2

(cosine law E=I / d^2cosx)
Lambert's cosine law of diffuse reflection
Intensity (I)
I=In(CosX)
X (in degrees) is measured from the normal
Purkinje img # 1 is formed by
ant cornea
Purkinje img # 2 is formed by
posterior cornea
Purkinje img # 3 is formed by
ant lens
Purkinje img # 4 is formed by
post lens
which purkinje img is inverted and smallest
4
which purkinje img is largest but dimmest
3
which purkinje img is formed by reflection, refraction?
reflect: 1
refraction: 2-6
Zernike polynomials:
Defocus is which term
4
Zernike polynomials:
Astigmatism is which term
3 and 5
Zernike polynomials:
coma is which term
7
Zernike polynomials:
spherical aberration is which term
12
Zernike polynomials:
Defocus is which term
4
Zernike polynomials:
Astigmatism is which term
3 and 5
Zernike polynomials:
coma is which term
7
Zernike polynomials:
spherical aberration is which term
12
Anything in a fixed retinal location is not seen, it is due to
trochsler fading
(thats why we dont see our BV)
ob can be viewed with rapidly moving light eg oscope)
"worm like bright spots" seen with bright blue background (short wavelenght) is due to
capillary circulation due to white blood cells
Haidinger's Brush is seen when
looking in blue plane polarized light
blue arcs due to
secondary stimulation of neighboring cells by the action currents in the initial optic nerve fibers
catoptric images refer to images that are formed by
reflection
dioptric images refer to images that are formed by
refraction