retinának

Retinák is a term that can refer to several different concepts, primarily in the fields of biology and optics. In biology, "retina" is the light-sensitive tissue lining the back of the eye. It contains photoreceptor cells called rods and cones, which convert light into electrical signals that are then processed by the brain, allowing us to see. Conditions affecting the retina, such as macular degeneration or diabetic retinopathy, can lead to vision loss. The study of the retina is a crucial part of ophthalmology.

In optics and photography, "retina" is sometimes used informally to describe a display resolution that is so high that individual pixels are indistinguishable to the human eye at a normal viewing distance. This concept was popularized by Apple Inc. with their Retina display technology, which aims to provide sharper and more detailed images on electronic devices like smartphones and laptops. The perceived resolution depends on factors such as pixel density and viewing distance.

The term can also appear in more specialized scientific contexts, though these are less common for general audiences. Regardless of the specific field, "retinák" generally relates to either the biological structure responsible for vision or a standard of high visual clarity in display technology. Understanding the context in which "retinák" is used is key to interpreting its meaning accurately.