Application of pupil expansion device in small pupil cataract surgery

The pupil expansion device can assist small pupil cataract surgery. Currently several pupil expansion device are used in clinic, such as Morcher pupil dilator, Graether pupil ring, Perfect pupil device, Siepser pupil ring, Malyugin ring and OASIS iris expander, etc. Along with the continuous improvement of its design and use of skills, the pupil expansion device is considered a good method because of the light injury and good auxiliary function during small pupil cataract surgery. (Int Rev Ophthalmol, 2018, 42: 98-101) Key words: cataract surgery; small pupil; pupil expansion device