- 162 pages
- English
- ePUB (mobile friendly)
- Available on iOS & Android
About This Book
Vision Facts is a question and answer guide to the wonders of the human eye, its complex structures and the process of visual perception. It traces the journey of vision from a ray of light entering the eye to the processing done by the brain, to the development and aging of the human visual system and common disorders associated with both processes. Organized in an intuitive question-and-answer format and accompanied by clear diagrams, Vision Facts provides answers regarding your vision in a manner accessible to all who are interested. Each topic includes references to external resources such as lecture notes and research papers for those who wish to delve deeper. It is a perfect handbook for anyone who is interested in visual science, sensory processing, neuroscience, or physiology; and is an excellent reference for anyone considering a career in ophthalmology or optometry.°Some examples of the questions include the following. What is the resolution of the eye? Why do astronomers often cover flashlights with a red filter while stargazing? What is color-blindness and how does it occur? What role does vision play in the circadian rhythm? What chemical signals cause the eye to develop into its mature form? How does alcohol during pregnancy affect eye development? How well can a newborn baby see? How does being born prematurely affect vision? What is 20/20 vision? How does aging affect vision? These are all questions that are addressed in Vision Facts, along with countless more.
Frequently asked questions
Information
| 1 | The Eye |
| Q1 | What are the important parts of the eye involved in detecting light? |
| Q2 | What is the cornea? |
| Q3 | What is the iris? |
| Q4 | What causes eye color? |
| Q5 | What is the pupil? |
| Q6 | What is the lens? |
| Q7 | What is the ciliary body? |
| Q8 | What is the ciliary muscle and what is its role in vision? |
| Q9 | What is the aqueous humor and what is its function? |
| Q10 | What is the vitreous humor and what is its function? |
| Q11 | What is the optic nerve? |
| Q12 | What is the retina? |
| Q13 | What is the fovea? |
| Q14 | What is the resolution of the human eye? |
| Q15 | What is the macula? |
| Q16 | Why is the macula yellow? |
| Q17 | What is the tapetum lucidum? |
| Q18 | What is the retinal pigment epithelium? |
| Q19 | What is the choroid? |
| Q20 | What is the sclera? |
| 2 | Detection |
| Q21 | What is sensory transduction? |
| Q22 | What types of neurons are found in the retina? |
| Q23 | What are the layers of the retina? |
| Q24 | How do the layers of the retina work together? |
| Q25 | What are photoreceptor cells? |
| Q26 | What are the two types of photoreceptors? |
| Q27 | What is the difference between the rods and cones? |
| Q28 | How many rods are there in an average human retina? |
| Q29 | How many cones are there in an average human retina? |
| Q30 | What is the distribution of rods and cones throughout the retina? |
| Q31 | What is the structure of a photoreceptor cell? |
| Q32 | What is rhodopsin? |
| Q33 | How do rods detect light? |
| Q34 | What happens when a rhodopsin molecule becomes activated? |
| Q35 | What is the absorption spectrum of rhodopsin? |
| Q36 | What is the Purkinje effect and why does it occur? |
| Q37 | What is photobleaching? |
| Q38 | Why do astronomers often cover flashlights with a red filter while stargazing? |
| Q39 | How do cones detect light? |
| Q40 | What are the absorption spectra of the three types of photopsin? |
| Q41 | Why is vitamin A important for the proper functioning of the eye? |
| Q42 | What is disc shedding? |
| Q43 | Why ... |
Table of contents
- Cover Page
- Half Title
- Full Title
- Copyright
- Dedication
- Contents
- Preface
- Introduction
- Acknowledgement
- Questions
- Part I: The Visual Pathway
- Part II: Development
- Part III: Aging
- Answers
- Part I: The Visual Pathway
- Part II: Development
- Part III: Aging
- Afterword
- Glossary
- Index