Diopter calculation method of toric intraocular lens (Toric IOL)
A calculation method and diopter technology, applied in optics, optical components, instruments, etc., can solve problems such as large errors in calculation formulas
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[0072] Example Step 1
[0073] Basic data acquisition
[0074] Crystal selection, confirm factory A constant: A=119.8
[0075] Clinically determined reserved diopter after operation: Post D=0
[0076] Corneal topography examination data: CT = 544, AC = 1.94, Kf1 = 42.30, Kb1 = 6.37, Axis1 = 90, Kf2 = 44.57, Kb2 = 6.42, CT: corneal thickness, AC: anterior chamber depth, Kf1: anterior corneal surface Flat axis curvature, Kb1: flat axis curvature of the posterior corneal surface, Axis1: flat axis of the anterior corneal surface, Kf2: steep axis curvature of the anterior corneal surface, Kb2: steep axis curvature of the posterior corneal surface, biometric inspection data: AL=22.31, LT=4.50, AL: eye axis length, LT: lens thickness, surgical incision position, determine the amount of surgical astigmatism: SIA=0.50, SIA Axis=150,
[0077] Constant: Corneal refractive index: 1.376, aqueous refractive index: 1.336
[0078] Application formula
[0079] Formula 1: K2-K1=Cyl, Cyl Axis=Axis1±90
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