Method of Measuring Corneal Curvature and Thickness Distribution Using Slit Lamp
A technology of thickness distribution and slit lamp, which is applied in the direction of eye testing equipment, application, medical science, etc., to achieve the effect of broadening the use
Active Publication Date: 2016-08-17
SHENZHEN CERTAINN TECH CO LTD
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Problems solved by technology
However, in the prior art, there is no technical solution for measuring the curvature distribution and thickness distribution of the cornea by using a slit lamp. Expanded use of the slit lamp
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[0058] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.
[0059] reference figure 1 , figure 1 The flow chart of the method for measuring corneal curvature distribution and thickness distribution using slit lamp, including:
[0060] S101: The lighting optical path of the slit lamp system is facing the human eye to be tested, so that the slit light illuminates the corneal section along its main optical axis; the imaging optical path of the slit lamp system faces the direction at an angle β with the lighting optical path of the slit lamp system The corneal cut surface fissure imaging is obtained, and the corneal cut surface fi...
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The invention discloses a method utilizing a slit lamp for detecting corneal curvature distribution and thickness distribution. The method comprises the steps that the slit lamp is utilized for photographing a corneal section slit image; the corneal section slit image is projected to a corneal section to obtain a corneal section image, and then a front surface outline and a rear surface outline of the cornea are found in the corneal section image to obtain curvature distribution and thickness distribution of the cornea; or the front surface outline and the rear surface outline of the cornea are found out in the corneal section slit image at first, then the corneal section slit image is projected to the coordinate transformation relation needed by the corneal section image, and coordinate transformation is carried out on the front surface outline and the rear surface outline of the cornea to obtain a front surface outline curve and a rear surface outline curve, on the corneal section image, of the cornea, so that curvature distribution and the thickness distribution of the cornea are obtained. According to the method, the corneal section slit image obtained through photographing is utilized, the corneal section slit image is processed to obtain the corneal section image, the thickness distribution and the curvature distribution of the cornea are obtained according to the corneal section image, the use range of the slit lamp is widened, and a doctor can utilize the slit lamp for detecting more comprehensive eye parameters with the help of the method.
Description
Technical field [0001] The invention belongs to the technical application field of a slit lamp, and specifically relates to a method for obtaining the corneal curvature distribution and thickness distribution by processing the slit map of the corneal section measured by the slit lamp. Background technique [0002] Slit lamp is an important instrument for ophthalmological examination. Slit lamp microscope is composed of an illumination system and binocular microscope. It can not only make superficial lesions be observed very clearly, but also can adjust the focus and the width of the light source to make an "optical section". Lesions in deep tissues can also be clearly revealed. The slit lamp can clearly observe the eyelids, conjunctiva, sclera, corneal anterior chamber, iris, pupil, lens and the front 1 / 3 of the vitreous body, and can determine the location, nature, size and depth of the lesion. The cornea is a transparent membrane located on the front wall of the eyeball, which...
Claims
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IPC IPC(8): A61B3/135A61B3/107
Inventor 蔡守东吴蕾
Owner SHENZHEN CERTAINN TECH CO LTD