Optics : Optical Properties Flashcards
What are optical properties?
Contact lens magnification Accommodative demand Convergence demands Field of view Apparent eye size
These are examples of? Contact lens magnification Accommodative demand Convergence demands Field of view Apparent eye size
Optical Properties
What type of optical propertes is compared to spectacles?
Magnification
What is CLM?
Contact Lens Magnification
What refractive error is when the accommodative demand is HIGHER with contact lenses compared to spectacles?
Myopia
What refractive error is when the accommodative demand is LOWER with contact lenses compared to spectacles?
Hyperopia
What refractive error is when the convergence demand is INCREASED with contact lenses compared to spectacles?
Myopia
What refractive error is when the convergence demand is DECREASED with contact lenses compared to spectacles?
Hyperopia
What lens creates base in prism?
Minus
Where does the image move with a minus lens with a base in prism?
apex or outwards
What lens creates base out prism?
Plus
Where does the image move with a minus lens with a base out prism?
apex or inwards
What type of optical property?
Contact lens move with the eye
Spectacle edge of lens and frame reduced fov
Increased fov with contact lenses compared to spectacles
Field of View
Does the contact lens move with the eye?
Yes
What reduces field of view?
Spectacle edge of lens and frame
