Which type of lens is specifically designed to offer comfort for viewing at a computer screen?

Occupational progressive lenses are specially designed to provide visual comfort and optimal vision at different working distances, particularly for tasks that involve computer use. Unlike standard progressive lenses, which typically accommodate general distance and near vision, occupational progressives have a larger intermediate zone. This design makes it easier for individuals to see clearly at the distance of a computer screen, which is usually between 20 to 40 inches away.

Additionally, these lenses may feature an enhanced lower section that allows for comfortable reading or detailed work without the need to constantly tilt the head up or down, reducing neck strain that can occur from improper posture during prolonged computer use. This focused design for specific tasks is what makes occupational progressive lenses highly beneficial for those who spend significant time at a computer.

In contrast, single vision lenses only provide one focal point, either for distance or near vision but not both. Trifocal lenses are meant to help with three different viewing distances but do not offer the seamless transition and comfort over intermediate distances needed for computer work. Bifocals, while addressing two distances, can also create issues with intermediate vision since they primarily focus on distance and near vision. Therefore, occupational progressive lenses uniquely fulfill the need for visual comfort while working at a computer.