| 1 | Corneal ulcers occur most often in patients who use extended-wear soft contact lenses. | |
| 2 | The design method of wavefront corneal contact lens by the objective optometry is presented. | |
| 3 | At the same time, we clarify soft contact lens on the clinical application and its special use. | |
| 4 | In this paper, the development situations, materials, manufacture of the Comeal contact lenses and their applications are introduced. | |
| 5 | The back surface profile of the contact lens is acquired from the topographic data of the anterior corneal surface, via a fitting procedure of least square; |