Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
9 Cards in this Set
- Front
- Back
|
Optical Axis
|
Line connecting centers of curvature of the eye; goes through nodal points and is perpendicular to all refracting surfaces. Displaced 5 deg temporally and 2 deg down
|
|
|
Visual axis
|
Connects fixation point, nodal points and fovea
|
|
|
Pupillary axis
|
Line normal to cornea, passes through center of entrance pupil
|
|
|
Line of sight
|
connects fixation point to center of entrance pupil, goes through 1st purkinje image
|
|
|
Fixation axis
|
connets fixation point to center of rotation of globe
|
|
|
Angle alpha
|
angle between optical and visual axes, formed at nodal point. Positive when visual axis is nasal to optic axis
|
|
|
Angle lambda
|
Angle between pupillary axis and line of sight, formed at center of entrance pupil. Measured by Hirshberg test
|
|
|
Angle kappa
|
between pupillary and visual axes, not a true angle
|
|
|
Angle gamma
|
angle between fixation axis and optical axis
|
