A pair of carriage rails are provided in parallel to each other in a casing. The device includes first and second retention members adapted to be disposed in proximity to the outer surface and the inner surface of the body wall, respectively. The low-frequency content of the data allows for imaging the radial extent of the formation structure up to 15 m, greatly enhancing the penetration depth as compared to that obtained using conventional monopole compressional-wave data. Lastly, the present invention provides a pharmaceutical composition comprising a pharmaceutically acceptable carrier and a therapeutically acceptable amount of the compound above. Upright plant form with a cream heart. The apparatus includes units for inputting refractive power data on a trial contact lens, converting the refractive power data to obtain ablation data, controlling an ablation amount of the corneal tissue based on the ablation data, storing the refractive power data corresponding to each contact lens, and revising the refractive power data.