Anatomy
Photoreceptors (Light-Sensing Cells / Rods and Cones)
Photoreceptors are special cells in your retina that sense light and convert it into signals your brain can understand. There are two types: rods (see in dim light and black-and-white) and cones (see color and fine detail). Photoreceptors are essential for vision—without them, you would be blind.
Anatomy Overview
Photoreceptors (Light-Sensing Cells / Rods and Cones)
Structure & Components
Convert light into electrical signals
Enable color vision (cones)
Enable low-light vision (rods)
Determine sharpness of vision
Allow us to see our world
Functions & Physiology
Normal retinal anatomy
Genetic determination
Developmental process in fetus
Part of visual system
Fundamental to vision
Key Points
Protect eyes from UV damage
Adequate vitamin A for photoreceptor health
Antioxidant-rich diet
Regular eye exams
Avoid smoking which damages photoreceptors
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