Physics of vision
The eye as an optical refracting system, including ray diagrams of image formation.
Sensitivity of the eye; spectral response as a photodetector.
Spatial resolution of the eye; explanation in terms of the behaviour of rods and cones.
Defects of vision and their correction using lenses
Properties of converging and diverging lenses; principal focus, focal length and power, ; ;
Myopia, hypermetropia, astigmatism.
Ray diagrams and calculations of powers (in dioptres) of correcting lenses for myopia and hypermetropia.
The format of prescriptions for astigmatism.