PATENT CLAIM ANALYSIS

Application Number: 15746748
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["351", "159010"]

Abstract:
The present invention discloses a method for preparing an aspheric vision correction lens with controllable peripheral defocus. It comprises the steps of: calculating and determining the conditions required for the formation of myopic defocus of a human eye, by examining the shape of the retina of the human eye, the amount of peripheral defocus of the naked human eye or the amount of peripheral defocus of the human eye with a lens; formulating a plan of distribution of the refractive power of the vision correction lens varying with the aperture, according to the conditions obtained for myopic defocus; and making the vision correction lens according to the obtained plan of distribution of the refractive power of the vision correction lens such that after the refractive power of the vision correction lens is added to the human eye, the distribution of the refractive power of the entire eye on the retina is greater in the peripheral region of the retina than in the central region of the retina, and falls in front of the retina, to form myopic defocus. The present invention also discloses a vision correction lens worn outside the eye, an orthokeratology lens and an intraocular lens prepared according to the method. The present invention further discloses a diagnosis and treatment method that utilizes myopic peripheral defocus to control and retard myopia growth.

Claim (Index 8):
The method for preparing an aspheric vision correction lens according to  claim 1 , characterized in that, in said step (3), according to the plan of distribution of the refractive, power obtained in step (2), a vision correction lens is made using act aspheric design method, the expression of the aspheric surface being: Z \ue8a0 ( y ) = cy 2 1 + 1 - ( 1 + Q ) \ue89e c 2 \ue89e y 2 + \u2211 i = 2 5 \ue89e \ue89e A 2 \ue89e \ue89e i \u00b7 y 2 \ue89e \ue89e i wherein Z(y) is an expression of the curve of the aspheric surface of the vision correction lens on the plane YZ, c is the reciprocal of the radius of curvature of the base spherical surface of the optical portion, y is the vertical distance from any point on the curve to the abscissa axis (Z), Q is aspheric coefficient, A 2i  is aspheric high-order term coefficient, and the points on the aspheric surface are obtained from the curve through rotationally symmetric variation about the abscissa axis (Z);\n through adjustment of the Q value and aspheric coefficients of the vision correction lens, the surface of the vision correction lens exhibits different equivalent curvatures in different radial portions, and the equivalent curvature changes uniformly and continuously throughout the optical zone, so that the vision correction lens has, at different apertures, a refractive power adapted to the refractive power distribution of myopic defocus, with the refractive power in the peripheral region being greater than the refractive power in the central region; \n the equivalent radius of curvature is described by: \n r m = ( d m 2 ) 2 + h m 2 2 \ue89e \ue89e h m = ( d m ) 2 + 4 \ue89e h m 2 8 \ue89e h m , wherein d m  is the measured aperture; M is the point at the aperture d m ; h m  is the sagittal height of point M, i.e., the difference in height between point M and the vertex of the aspheric surface; and r m  is the equivalent radius of curvature at point M.

Metadata:
- Claim Count in Document: 40.0
- Percentile: 86.0
- Lexical Diversity: 2.90244
- Patent Class: 351.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12309841', '12878777', '14532459', '13812480', '12597890']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6753652103582536
- 35 USC 102 Novelty (BERT): 0.5236227470540185
- Combined Prediction Score: 0.6601909640278302
- Mean Citation Score: 372.99214
- Max Citation Score: 378.20233
- Similarity Product: 221.6132297096736

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test