PSYC 212 Lecture Notes - Lecture 5: Presbyopia, Television, Corrective Lens
13 Jul 2014
School
Department
Course
Professor
Document Summary
September 15, 2011: accommodation, increase refracting power of the yee, changes during accommodation. Anterior surface of the lenss becomes more convex. Cs letters become lighter until they"re barely there: va numberator/demoninator, numerator = viewing distance, denominator = distance at which the letter subtends an angle of 5" of arc. Presbyopia decrease in accommodative ability: with aging the fibres in the nuclear become increasingly compresed and hardened by the constant addition of cortical feibres. Not in between between 40 cm and 6 meters: monovision contact lens (or surgery) 1 eye at distance brain will take images from both eyes and try to get information from the two to judge the distance between objects could possibly be painful/give headaches: bifocal contact lens. 2 corrections in the same eye (a clear image and a blurry image in the same eye) the eye will have rings that are adaptive for near or distance and they alternate.
