摘要:
Provided are a contact lens with a novel structure which can achieve an excellent lens-positioning performance in a circumferential direction in a worn state while ensuring a good wearing feeling and which can be easily manufactured with a high dimensional accuracy, and a method for manufacturing a contact lens. A peripheral part (24) of a contact lens (10) is provided with at least one thick portion (32) and at least one thin portion (30) that are capable of exhibiting a positioning effect in the circumferential direction in a worn state. In a change region (34) that connects the thick portion (32) to the thin portion (30), thickness changes are given respectively to a lens front surface (18) and to a lens rear surface (20).
摘要:
An object of the invention is to provide an application method capable of facilitating the application of the soft contact lens without using any instrument, a liquid for contact lenses capable of being used for the application method, and a soft contact lens package. The present invention is a method for applying a soft contact lens, including a shrinkage step of shrinking a soft contact lens by contacting the soft contact lens with a liquid for contact lenses, the liquid for contact lenses being capable of shrinking the soft contact lens to a state of being more intensively shrunken than an equilibrium state thereof in a physiological saline; and an application step of applying the shrunken soft contact lens to the eye, in which after the application step, the size of the soft contact lens is restored.
摘要:
A presbyopia contact lens set especially for a user who has worn spherical contact lenses, a designing method for a presbyopia contact lens, and a manufacturing method for a presbyopia contact lens that uses such design method. The presbyopia contact lens set configured by combining a plurality of types of presbyopia contact lens having different specifications lens powers, includes the plurality of types of presbyopia contact lenses in which the radial lens power profile in a near-use region and that in a far-use region are defined using mutually different functions, the function for defining the radial lens power profile in the far-use region is set in accordance with a specifications lens power, and the radial lens power rate-of-change in the far-use region is made larger for lenses having a small specifications lens power than for lenses having a large specifications lens power.
摘要:
A contact lens including a circumferential positioning member (40, 42, 44, 46) that can selectively set up a first stable state where a superficial center (30) of a second power zone (24) is decentered on a symmetrical meridian (22) from a geometrical center (20) of an optical zone (14) and an orthogonal meridian (34) perpendicular to the symmetrical meridian (22) with the lens worn on a right eye is circumferentially tilted by a first angle relative to a vertical line (50) of the eye, and a second stable state where the orthogonal meridian (34) under condition in which the lens is worn on a left eye with the right eye wearing state inverted upside down is circumferentially tilted by a second angle on the opposite side of the first angle relative to the vertical line (50), as well as a visible indicator mark (48) for identifying a lens orientation.