Abstract: An optometric apparatus and an optometric method which perform an accurate eye examination on people who have a wide range of refractive powers with astigmatism, myopia or hyperopia, and which are also applicable especially to those with mixed astigmatism are provided. The apparatus performs a subjective eye examination by prompting a subject to view test symbols displayed on a computer screen by one of the right and left eyes at a time.

Abstract: A system and method for determining an eyeglass/contact lens power is provided, which can determine the power of an eyeglass/contact lens that is suitable for an individual. The eyeglass/contact lens power determination system (20) according to the present invention comprises inputting means (202) for entering information on the condition of a subject's eye, means (204) for determining an optical eyeball model corresponding to the information on the eye condition entered through the inputting means (202), and means (218) for selecting a lens power for verifying the focal power of an eyeglass/contact lens worn by the subject using the optical eyeball model determined by the optical eyeball model determining means to select a lens power.

Abstract: A spectacle and contact lens selecting system includes an input unit for inputting information related to a state of eyes of a user, an eyeball optical model deciding unit for deciding an eyeball optical model corresponding to the information related to the state of the eyes input by the input unit, an eyeball accommodation range determination unit for examining optical performance of an eyeball within a range of accommodation of the user in the decided eyeball optical model to determine the range of accommodation of the eyeball, a lens power selecting unit for examining optical performance when the user wears spectacles or contact lenses to select a lens power, and a wearing state display unit for displaying a wearing state of the spectacles or the contact lenses to be selected.

Abstract: An optometric apparatus and an optometric method includes the steps of acquiring subject's attributes and an orientation selected by the subject on an astigmatic axis determination chart displayed on the computer screen, displaying vision measurement charts in the acquired orientation and the orientation perpendicular thereto to acquire visual recognition limits selected by the subject, calculating far point distances based on the acquired visual recognition limits and the acquired subject's attributes, and calculating a refractive power based on the acquired orientation and the calculated two far point distances. The far point distance is calculated using a neural network that has been determined by a number of subjects in advance.

Abstract: An optometric apparatus and an optometric method which perform an accurate eye examination on people who have a wide range of refractive powers with astigmatism, myopia or hyperopia, and which are also applicable especially to those with mixed astigmatism are provided. The apparatus performs a subjective eye examination by prompting a subject to view test symbols displayed on a computer screen by one of the right and left eyes at a time.

Abstract: An optometric apparatus and an optometric method includes the steps of acquiring subject's attributes and an orientation selected by the subject on an astigmatic axis determination chart displayed on the computer screen, displaying vision measurement charts in the acquired orientation and the orientation perpendicular thereto to acquire visual recognition limits selected by the subject, calculating far point distances based on the acquired visual recognition limits and the acquired subject's attributes, and calculating a refractive power based on the acquired orientation and the calculated two far point distances. The far point distance is calculated using a neural network that has been determined by a number of subjects in advance.

Abstract: A spectacle and contact lens selecting system and a method thereof, which enable the remote selection of lenses fitted to eyes of each person and the confirmation of a wearing state, are provided. The system comprises: input means for inputting information related to a state of eyes of a user; eyeball optical model deciding means for deciding an eyeball optical model corresponding to the information related to the state of the eyes input by the input means; eyeball accommodation range determination means for examining optical performance of an eyeball within a range of accommodation of the user in the decided eyeball optical model to determine the range of accommodation of the eyeball; lens power selecting means for examining optical performance when the user wears spectacles or contact lenses to select a lens power; and wearing state display means for displaying a wearing state of the spectacles or the contact lenses to be selected.

Abstract: A system and method for determining an eyeglass/contact lens power is provided, which can determine the power of an eyeglass/contact lens that is suitable for an individual. The eyeglass/contact lens power determination system (20) according to the present invention comprises inputting means (202) for entering information on the condition of a subject's eye, means (204) for determining an optical eyeball model corresponding to the information on the eye condition entered through the inputting means (202), and means (218) for selecting a lens power for verifying the focal power of an eyeglass/contact lens worn by the subject using the optical eyeball model determined by the optical eyeball model determining means to select a lens power.