The vision of the human eye is not made up of pixels, but it is often compared to pixel-like structures for understanding its functionality. Instead of pixels, the eye has photoreceptor cells called rods and cones located in the retina. Rods are responsible for low-light vision and detecting shades of gray, while cones are sensitive to color and work best in bright light. These photoreceptors capture light and convert it into electrical signals, which are then processed by the brain to form images. The resolution of the eye is determined by the density of photoreceptors and their distribution across the retina, particularly in the fovea, where visual acuity is highest. While the eye doesn't operate in discrete units like digital pixels, the concept of pixels is often used as an analogy to describe how the eye captures and processes visual information. This biological mechanism is far more complex and adaptive than digital imaging systems.
Is the vision of the eye made up of pixels?

- The Definitive Guide to Building RAG Apps with LlamaIndex
- Advanced Techniques in Vector Database Management
- Large Language Models (LLMs) 101
- Mastering Audio AI
- The Definitive Guide to Building RAG Apps with LangChain
- All learn series →
Recommended AI Learn Series
VectorDB for GenAI Apps
Zilliz Cloud is a managed vector database perfect for building GenAI applications.
Try Zilliz Cloud for FreeKeep Reading
How does Gemini 3 manage long-chain reasoning across many documents?
Gemini 3 manages long-chain reasoning across many documents through a combination of long context, dynamic thinking, and
What is the role of transformers in multimodal AI?
Transformers play a crucial role in multimodal AI by providing a framework that can effectively process multiple types o
How does the visual backbone (e.g., CNNs, ViTs) interact with language models in VLMs?
In Vision-Language Models (VLMs), the visual backbone, which typically consists of Convolutional Neural Networks (CNNs)