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### 39 Cards in this Set

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 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