OPTO 5320 VISION SCIENCE I

Fall, 2017

 

Instructors

Dr. Scott Stevenson (course master)

Office: Room 2152              Voice: 713-743-1960              Email: SBStevenson@uh.edu

Office hours: BY APPOINTMENT

 

Dr. Dan Coates                     Email: DRCoates@uh.edu

 

Class Schedule

Tuesday, Thursday, Friday                              9 – 10 am                      Room HBSB 203E

 

 

Objectives of the Course

1.     Students will develop a mastery of the fundamentals of vision and their application to clinical practice.

 

2.     Students will become familiar with the basic structures of the eye and will gain a deep understanding of how light interacts with retinal cells to produce vision.

 

3.     Students will develop a facility in performing basic calculations involved in specifying the stimulus for vision and visual performance.

 

Reading

Recommended text:

1.      Schwartz SH.  Visual Perception – A Clinical Orientation, 3rd ed, Appleton & Lange, Norwalk, CT, 2004.

 

2.      Norton TT, Corliss DA & Bailey JE.  The Psychophysical Measurement of Visual Function, Butterworth-Heinemann, Woburn, MA, 2002. 

 

Student Evaluation

There will be three examinations, each covering roughly one third of the semester, each counting roughly

1/3 of the semester grade. Examinations will cover materials from handouts and lectures.

Dr. Stevenson’s lectures will be covered by the first two exams. Dr. Harwerth’s lectures will be included in

the third exam, which will be given during finals week. The third exam is NOT cumulative.

Clickers may be used in class to poll students as a group, but clicker responses will not be used for grading.

 

Americans with Disabilities Act

The American with Disabilities Act (ADA) of 1990 requires that the university make reasonable accommodation to persons with disabilities as defined in the act.  Students who need accommodations under the ADA should contact the instructor within the first two weeks of the semester.

 

Classroom Recording

Audio and video recording of lectures at UHCO requires permission of the lecturer. It is a violation of common sense, common decency, and College policy to make a recording of another person without asking permission.

For Vision Science I, all enrolled students are hereby given permission to make audio recordings for the purpose of studying lecture material. There is no need to ask each time. Recordings made by one student can be shared with other UHCO students only, but no other use or distribution of the recordings is permitted. Video recording is not permitted.

 


OPTO 5320 VISION SCIENCE I

Fall, 2017 (Tu, Th, Fr)

Course Outline

 

GENERAL INTRODUCTION TO VISION SCIENCE

 

The Eye- basic anatomy                                                                              

 

Light - the stimulus for vision                                                                    

         Light as waves: reflection, refraction, diffraction, Mie and Rayleigh scattering

         Light as particles: energy of photons, the essential randomness of photon capture, photoisomerization

         Radiometry and Photometry

         Spectra of various light sources, spectral absorption in the eye, spectral absorption of pigments

         Light damage, Maximum Permissible Exposure, light levels in clinical exams

 

Photoreceptors: Rods and Cones

         Pigments and regeneration, wave guide properties, distribution across retina,        

 

VISUAL FUNCTION

 

Light Detection and Adaptation

         Photoreceptors and the dark current,

         Light adapation: adjusting to bright light

         Dark adaptation: recovering from bright light

 

Sensitivity across the Visual Field                                                                

         Spatial and temporal integration of vision

         Peripheral vision

         Standard Automated Perimetry

         Advances in visual field assessment

 

Visual Acuity                                                                                             

         Defining and measuring acuity

         Factors that determine acuity

         Eye chart designs

         Texas vision requirements for driving, legal blindness definition

 

Contrast Sensitivity

         Defining and measuring contrast sensitivity

         The Spatial Contrast Sensitivity Function

         Temporal Contrast Sensitivity and Flicker                                                                           

         Flicker sensitivity and the CFF

 

COLOR VISION (Dr. Coates)

 

 

EXAMS

         Exams each cover about one third of the course, with the last exam covering primarily Color Vision.

         Exam I (September 21-27)

         Exam II (October 26 – November 1)

         Exam III (Final Exam, 2nd week of December)

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PDF files for download:

VSI SyllabusIntro2017.pdf 

 

Handouts for Exam I:                                    

L01OcularAnatomy.pdf                                

L02Math.pdf                                                   

L03Light.pdf

L04RadiometryPhotometryBrightness.pdf

 

Here is a link to the article from New England Journal of Medicine describing retinal damage from a “laser pointer” with 150 mW power.

LaserDamage_nejmc1005818.pdf

 

The three movies here illustrate how minimally distinct border or heterochromatic flicker is used to make a luminance match between two different lights.

                 photomBY.m4v                  photomBY.mov

                 photomRG.m4v                 photomRG.mov

                 photomGray.m4v              photomGray.mov

 

L05RodsCones.pdf

L06AbsoluteThreshold.pdf

L07VisualField.pdf

VS1_Exam1example.pdf

VS1_Exam1example2.pdf

 

VS1_exam1_Fall2016_KEY.pdf

Handouts for Exam II

L08Acuity.pdf

TxDrivingVisionRequirements.pdf

L09ContrastDefs.pdf

L10CSF.pdf                    ScalingForCorticalMag.pdf

L11TCSF.pdf

 

VS1_Exam2example.pdf

VS1_Exam2_Fall16_KEY.pdf

 

Handouts for Exam III

L12Motion.pdf

L13VisionDevelopment.pdf

L14Stereopsis.pdf

 

Color Handouts from Dr. Harwerth (also on BlackBoard)

ColorVision1.pdf

ColorVision2.pdf

ColorVision3.pdf

ColorVision4.pdf

ColorVision5.pdf

ColorVision6.pdf

ColorVision7.pdf

 

 

 

Motion demo movies shown in class: Some you need to download and play with looping for best results.

                       Static grating, flicker, counterphase           cphasedemo.mov

                       Temporal CSF                           tcsfdemo.mov

                       Spatiotemporal CSF                 stcsfdemo.mov

 

These motion demos are not on the exam for fall 2014, but you might find them interesting to watch. These are the same demos shown in lecture:

                       Grating drifting behind holes GratingThroughHoles.avi

                       Apparent motion demo (doesn’t work on all computers )

                       http://www1.psych.purdue.edu/Magniphi/SimpliPhi.html

                       Apparent motion demo (should work!) PhiDemo.gif

                       Letters defined by moving texture: download and loop            RandotUHCO.gif

                       Spiral aftereffect. Stare at center for 30 seconds   driftspiral4Hz16cpihalfhelix.gif

                       Drifting gratings with various spatial and temporal frequency. Need looping

                       driftgrat4Hz32cpi.avi

                       driftgrat1Hz2cpi.avi

                       driftgrat1Hz8cpi.avi

 

                       Compare direct and peripheral viewing. diamovieW.mov

                       Do the gray bars help you see the diamond?      diamovieG.mov