PPT-Retina - contains Pigment epithelial cells- absorb light that passes through the retina

First neuron Rods vision in light of low intensity Cones visual acuity and color vision Second neuron Bipolar second neurons of visual pathway Ganglion Ganglion third neurons of visual pathway. Temporal filtering . – visual response slower than input signal. . 2. Spatial filtering . – local signals are combined across space to varying degrees.. . . 3. Light adaptation . – retina modifies responsiveness depending on average light level.. Dr.Bakhtiar. . Qadr. . Jaf. بسم الله الرحمن الرحيم. OBJECTIVES. 1-SHORTLY DISCUSS THE ANATOMY & PHYSIOLOGY OF THE RETINA.. SHORTLY DISCUSS COMMON VISION THREATENING RETINAL DISEASES.. Light is electromagnetic energy.. One nm = one billionth of a meter. The Visible Spectrum. Properties of light. hue – determined by . wavelength.. saturation – relative purity of . light.. brightness – variation in . Why can’t we see in the dark? Why can we see in the dark?. How do we cry?. How do our eyes form the color in them?. How do your eyes work?. What is the purpose off the Iris?. Why do people have different eye colors?. November 18, 2016. Grand Rounds. CC. Failed vision screening at a pediatrician’s office. HPI. 5 . yo. M presents to clinic for evaluation because of a failed vision screening at his pediatrician's office. . We will look at the following parts:. Take notes on this page…. CORNEA . (clear lens in front of eye). transparent covering of the front of the eye. Allows for the passage of light into the eye and functions as a fixed lens.. The physics of light. :.  . What . we see is a small part of the electromagnetic spectrum call . visible . light -- refer to overhead..  . Physical . properties of . visible . light. :.  wavelength (varies from 400 to 700 nm) -- perception of hue. Follow-Me – . iQuiz. Q. What is the function of the semi-circular canals?. Air. Brings impulses from retina; Brings impulse to brain. Ear. Detect colour. Convert light into nerve impulses; Image forms on it. Monday, April 18. Mike Vue. Artificial Retina allows someone who has lost their vision to see again. The technology is implanted in the eye and it sends signals to allow the person to see.. Table of contents. November 18, 2016. Grand Rounds. CC. Failed vision screening at a pediatrician’s office. HPI. 5 . yo. M presents to clinic for evaluation because of a failed vision screening at his pediatrician's office. . Name the four areas which make up the cerebral cortex of the brain. Describe three ways in which scientists and doctors are able to study the function of parts of the brain. Explain why the case-study of Phineas Gage isn’t the most reliable evidence we have for providing information on brain structure and function. ee-01083-045. Fatima . Rafique. ee-01083-128. What . I. s An ERG. Electroretinography (ERG) is an eye test used to detect abnormal function of the retina (light detecting portion of eye). It measures the electrical response of the light sensitive cells such as rods and cones. The First Class . . 2. nd. Semester. The Special Senses. The Special Senses. Five special Senses . Olfection. (smell) . Gustation. (taste) . Vision (sight). Hearing . Equilibrium. Vision . Vision is extremely important to human survival. . Why is short wavelength electromagnetic radiation dangerous to us, whereas long wavelength electromagnetic radiation is considered ‘safe’? . Which wavelengths do we see as ‘Light’? Why these wavelengths? Why couldn’t the shorter and longer wavelength stuff work just .