Is there a difference between normal glasses and computer glasses?

Focus range: Computer glasses generally are targeted at 26-32" and occasionally have a yellowish tint to reduce glare. Normal glasses are targeted for distance and may include a bifocal for near work at 14".

Focal lenfth: Computer glasses are helpful especially in the presbyopic age to provide intermediate focus for that task when the video screen and keyboard must be in simultaneous focus. Regular glasses (bifocals) give clear far and near vision but might not give a totally clear image at video screen distance.