Eye3d - Regaining Eyesight is an iPhone app developed by Asobu Inc., available for free in the Lifestyle category under Health & Fitness. This innovative application utilizes stereograms to aid in vision improvement, targeting issues such as nearsightedness, farsightedness, astigmatism, and presbyopia. By engaging with the stereograms provided, users can experience a three-dimensional view, which helps relax eye muscles and potentially enhance eyesight.

The app features various functionalities, including different stereogram collections organized into packages, a visual acuity test, a training record tracker, and a reminder system for consistent usage. Users can explore additional stereogram packages in the Packages Shop and unlock secret packages by fulfilling specific conditions, adding an element of surprise and motivation to the eye training experience.