A Cultural and Scientific Survey of the Eye and Vision

Course Lectures

• Fun with Visual Illusions

  William Ayliffe

  Play

  Visual illusions captivate us, revealing the extraordinary workings of the visual system. By studying these illusions, we gain insights into the brain's information processing methods, leading to surprising revelations about perception. Through a rich array of artistic examples and novel images, this module illustrates how our brain interprets and sometimes misinterprets visual stimuli. Expect to leave with a renewed perspective on the world around you, inspired by the beauty and complexity of visual phenomena.

• Correction of Optical Defects: From Spectacles to Lasers

  William Ayliffe

  Play

  This module examines the evolution of optical corrections, showcasing the journey from the early use of spectacles to advanced technologies like laser surgery. It discusses:

  • The historical significance of spectacles proposed by Roger Bacon in the 13th century.
  • The impact of printing technology on the demand for vision correction.
  • Recent surgical advancements that have transformed vision correction methods.

  By understanding these developments, students will appreciate how far we have come in addressing optical defects.

• Diabetes, Hypertension and Vascular Diseases of the Eye

  William Ayliffe

  Play

  The eye serves as a crucial window into overall health, with conditions like diabetes and hypertension significantly affecting vision. This module covers:

  • How the eye’s transparent tissues function and their reliance on healthy blood vessels.
  • Diabetic retinopathy as a leading cause of blindness among working-age individuals.
  • The historical development of diagnostic tools like the ophthalmoscope.
  • Modern treatments available for various ocular diseases.

  Through this exploration, students gain insight into the interconnectedness of general health and eye conditions.

• Blindness in Children: The Global Perspective

  William Ayliffe

  Play

  This module addresses the pressing global issue of blindness in children, shedding light on its causes and implications. It discusses:

  • Prevalence rates of childhood blindness worldwide.
  • Common causes, including congenital conditions and nutritional deficits.
  • Preventative measures and treatment options.

  By understanding these factors, students are equipped to contribute to efforts aimed at reducing childhood blindness on a global scale.

• Why We See What We Do

  William Ayliffe

  Play

  In this module, students explore the fascinating mechanisms behind color perception. It covers:

  • The evolution of color receptors in organisms.
  • How the brain processes wavelengths of light to create color perception.
  • The cultural significance of color throughout history.

  By examining these elements, students will gain a deeper understanding of how color shapes our experiences and interactions with the world.

• How Do We See Colour?

  William Ayliffe

  Play

  This module investigates the remarkable processes that underlie our ability to see and interpret the world. Topics include:

  • The brain's construction of a three-dimensional model from two-dimensional retinal data.
  • How sensory information is integrated to enhance our perception of reality.
  • Challenges in perception that lead to the question: is seeing merely an illusion?

  Students will walk away with an understanding of the complexity and elegance of visual processing.