Helmholtz vs. Hering: Two Theories of Color Vision

Explore the fascinating world of phosphene phenomena—the sparkles you see when you press on your eyes—and learn what this entoptic phenomenon tells us about retinal health and detecting potential issues like retinal detachment.

Explore the Stiles-Crawford effect, where light entering the pupil's center appears brighter. Understand how this impacts visual acuity and highlights the importance of cone photoreceptor efficiency in photopic vision.

Discover the Purkinje shift and how our eyes' sensitivity to color changes in low light. This episode explains the transition from cone (photopic) to rod (scotopic) vision, affecting how we perceive red and blue hues at dusk.