39 results about "Achromatopsia" patented technology

This invention discloses an achromatopsia inspection / correction method, comprising the following steps: displaying a plurality of groups of achromatopsia test charts for the examinee to identify, each group is corresponding to one type of achromatopsia; determining the types of achromatopsia based upon the inspection results; displaying at least one colored color-matching contrast chart, one area of said color-matching chart is in a predetermined color, another area is for the examinee to match colors; taking the color-matching result from the examinee; determining the achromatopsia scales of the examinee by comparing the color-matching results of the examinee with said predetermined three elementary colors; selecting the corresponding achromatopsia correction spectrum curves according to the determined types and scales of achromatopsia. Besides, this invention also discloses an achromatopsia inspection / correction apparatus for realizing this method.

Enhanced visual acuity is provided by one or more exceptionally narrowband absorption dyes having sharp turn-on and cut-off slopes selected to spectrally sculpt light to correct most types of colorblindness, to exaggerate color contrast vision for everyone, and / or to markedly sharpen visual focus beyond normal vision. The dyes are incorporated, for example, in sunglasses, prescription and non-prescription eyewear, window thin films and artificial light sources such as incandescent, fluorescent, and LED lightbulbs to provide improved photopic color vision, improved mesopic dim light color vision, and also sharper scotopic night vision.

A method and a system for adjusting display effect according to an eyesight condition. The method comprises: adding a lens (10) with an adjustable focal length between a touch screen (20) and a display panel (30) of a mobile terminal (S1); acquiring eyesight capacity data of a user (S2); calculating, according to preset correspondence of the eyesight capacity data of the user, display data of the mobile terminal, and an angle of the lens, display data and a focal length of the lens corresponding to the current eyesight capacity data of the user (S3); and adjusting the display data of the mobile terminal and the focal length of the lens according to the display data (S4). The method and the system can adjust the focal length and the display data according to nearsightedness, farsightedness, achromatopsia, hypochromatopsia or other conditions of the user, and enable users with different eyesight to obtain optimal display effect when watching with naked eyes or with glasses.

The color vision detecting and correction method incldues the steps of: displaying several sets of achromatopsia detecting charts corresponding to one type of achromatopsia each for the testee to distinguish and determining the achromatopsia type of the testee; displaying at least one colour matching comparision diagram in one area for displaying some preset color and one other area for the testee to match color; receiving the color matching result of the testee; comparing the said color matching result with the preset color to determine the achromatopsia grade of the testee; and selecting corresponding achromatopsia correcting spectral curve based on the achromatopsia type and grade. One achromatopsia detecting / correcting equipment is also disclosed.

When people suffered from nearsightedness watch the letter O, shadows appear, and the farther away from the letter, the thinner the letter lines are and the more serious of the shadows are. When the right eye is used for watching the letter, the shadow of the letter tends to tilt to the left upper part, while when the left eye is used for watching the word, the shadow of the letter tends to tilt to the right upper part, and the phenomena of other shapes also occur. The reason is that when a person suffered from near sightedness reads a book, the sight lines of two eyes are simultaneously placed on the same place, the person is used to lowering the head to a low sight line direction to watch a position of a high visual surface, thus, the effect of the sight line direction leads to the formation of shadows and the azimuths of the letters. This effect is used for treating the nearsightedness in the invention. In the sighting target self-functionalized typoscope provided by the invention, a sight hole is arranged at a lower right azimuth opposite to the right eye, a sight hole is arranged at a lower left azimuth opposite to the left eye, and the azimuth directions of the two sight holes are opposite to azimuth directions of the letter shadows so as to promote the letter shadows to return back to the azimuths of letters. Not limited to this structure, an upright article, a hanging article and hand-held article which are used obliquely to change the sight lines to the right directions and unpatented, are (article capable of changing one sight line direction is also) included in the invention. The sighting target self-functionalized typoscope can be used for treating the eye diseases such as presbyopia, far sightedness, astigmatism, achromatopsia, cataract and the like. The typoscope with large sight holes can also be used when walking, and restricts no function of accessory.

The invention discloses a head-mounted assistant driving device for an achromate. The head-mounted assistant driving device for the achromate comprises an achromatopsia correction glasses body and a support, a sun shield is mounted at the rear side of the achromatopsia correction glasses body, the sun shield is connected with a fixed block, a connection block is fixed at the upper end of the achromatopsia correction glasses body, the support is arranged at the left side and the right side of the achromatopsia correction glasses body, a movable rod is mounted on the support, a string is fixed at the upper end of the movable rod, a right stretching belt is arranged at the lower end of the movable rod, a limit bloxk is arranged at the upper side and the lower side of a clamping block, a resetspring is mounted at the inner side of the limit block, a left stretching belt is arranged at the left side of the right stretching belt, and a mounting block is fixed at the end part of the left stretching belt. The head-mounted assistant driving device for the achromate can avoid the problem that the assistant driving device falls off due to jolt in a driving process and can realize a sunshading function on the achromate when in use.