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A method for predicting the change of spherical equivalent power before and after cycloplegia

A technology of ciliary muscle and degree of change, which is applied in the field of estimation of change degree of effective spherical power

Active Publication Date: 2020-10-20
天津医科大学眼科医院
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Problems solved by technology

Based on the above, previous studies have not found any factors that are more predictive of changes in spherical equivalent power before and after cycloplegia in adolescents

Method used

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  • A method for predicting the change of spherical equivalent power before and after cycloplegia
  • A method for predicting the change of spherical equivalent power before and after cycloplegia
  • A method for predicting the change of spherical equivalent power before and after cycloplegia

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Experimental program
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Embodiment

[0057] Select 8 cases, case 1 is low myopia before cycloplegia, case 2 is low myopia, case 3 is moderate myopia, case 4 is moderate myopia, case 5 is emmetropia, case 6 is emmetropia, and case 7 is hyperopia , Case 8 suffered from hyperopia; the parameters measured before cycloplegia were tested on 8 subjects according to the measurement method of the above-mentioned adjustment accuracy and the measurement method of the axial length of the eye, and the detection results of each factor are shown in Table 4 .

[0058] Table 4

[0059]

[0060]

[0061] Taking the following model as an example, the detection data of each factor in Table 4 is further processed, and the change degree of the equivalent spherical lens power of each case is estimated. After comparing the data of 145 cases, it is found that when the coefficient k 1-1 is -0.72, b 1 The accuracy of model 1 is the best when it is +1.41; when the coefficient k 2-1 -0.66, K 2-2 is -0.15, b 2 Model 2 has the best ...

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Abstract

The invention relates to a method for estimating spherical equivalent change degree before and after cycloplegia. The spherical equivalent change degree is estimated by measuring and adjusting an accuracy numerical value; in order to further improve the prediction accuracy, the eye axis length and the subject age can be increased to serve as reference factors, and a prediction result is obtained through a calculation model. The beneficial effects of the invention are that the method can achieve the effective estimation of the spherical equivalent change degree before and after cycloplegia; themethod is higher in predictability and can provide a new clinical standard for clinical ophthalmologists to evaluate whether children patients need to use a cycloplegia agent or not, so the diagnosisand treatment efficiency is improved, medical resources are saved, and related drug side effects borne by the patients due to unnecessary cycloplegia are reduced.

Description

technical field [0001] The invention belongs to the technical field of vision correction, and in particular relates to a method for estimating the change degree of spherical equivalent power before and after cycloplegia. Background technique [0002] In the process of diagnosis and treatment of myopia in children and adolescents, the diopter obtained by cycloplegia optometry is currently recognized as the gold standard at home and abroad. However, cycloplegia can also cause side effects of drugs such as mydriasis and near-distance blurred vision. The duration of side effects of different cycloplegics is also different, ranging from 6 to 8 hours to 2 to 3 days or even up to 1 week to completely subside, which affects the normal life and study of children to a certain extent, causing some parents and children who resist the use of cycloplegics. At the same time, a large number of clinical practices have shown that some children and adolescents have little change in diopter (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G16H50/20G16H50/70G06F17/18
CPCG06F17/18G16H50/20G16H50/70
Inventor 魏瑞华金成成杜蓓王景慧金楠刘桂华谷天瀑林伟平
Owner 天津医科大学眼科医院
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