7 results about "Phakic iol" patented technology

The present invention relates to a posterior chamber phakic IOL (1) having an inherent arch height (89A) independent of its external diameter (81), and a method for manufacturing such an IOL (1).

Provided are a method for predicting a Vault after phakic intraocular lens and an electronic device. After a thickness of a to-be-corrected crystalline lens, and a horizontal sulcus-to-sulcus value and a vertical sulcus-to-sulcus value corresponding to the to-be-corrected crystalline lens are obtained, a diameter ICL Size and an axial position ICL Ax of a preset ICL lens are collected, an effective sulcus-to-sulcus value, a lens thickness influence factor LTF, a Vault chord height h and the Vault are sequentially calculated according to the obtained data, and whether the diameter ICL Size and the axial position ICL Ax of the currently adopted ICL lens meet the Vault requirement or not is judged according to the Vault. The predicting accuracy and precision of a lens position after ICL lens implantation is reduced, postoperative complications are reduced, and the convenience of clinical operation and the safety of ICL operation are improved.

Method steps for correcting vision in an eye that uses a customized phakic IOL composing: (1) measuring one or more wavefront aberrations of the eye: (2) designing a wavefront-customized correction profile for an Intraocular Lens (IOL); (3) creating a customized IOL with the customized correction profile; and (4) implanting the customized IOL in the eye. Alternatively, an uncorrected IOL is first implanted and aligned in the eye, followed by in-situ scanning a femtosecond laser spot across the implanted IOL to locally change the Index of Refraction of the IOL material and create an in-situ customized IOL.

The present invention relates to a posterior chamber phakic IOL (1) having an inherent vault height (89A) independent from its external diameter (81), and to a manufacturing method of such an IOL (1).

The present application relates to a kind of intelligent auxiliary prescription systems of lens eye intraocular lens, comprising: haptics landing line acquisition module, obtain the three-dimensional structure data of anterior chamber and posterior chamber, construct 3D topographic map of ciliary sulcus area by AI three-dimensional image semantics analysis, obtain the best fitting ciliary sulcus line by fitting, with the best fitting ciliary sulcus line as reference, calculate and obtain haptics landing line;Ideal haptics determination module, according to the lateral depth difference between each point on haptics landing line, obtain the ideal haptics position combination sequence of intraocular lens;Crystal matching module, obtain the inventory data of crystal, based on the arch height prediction range and ideal haptics position combination sequence obtained in advance, obtain the best matching intraocular lens and its implant rotation position scheme from the crystal inventory.Compared with prior art, the present application has the advantages of high accuracy of crystal size matching, meeting the stability requirements of crystal implantation, more accurately guiding how to rotate and adjust arch height of crystal and optimizing crystal prescription process.

The invention relates to an arch height prediction method and system based on parameter model multi-coordination. The arch height prediction method comprises the following steps: selecting and collecting related parameters of a patient conforming to a sample standard and an implantable phakic intraocular lens of the patient; performing correlation matrix and multiple linear regression analysis on the parameters in the step 1 by utilizing statistical software, and establishing a new model Ma; establishing a comparison model library, wherein the comparison model library comprises a common place and a formula or a model Mb for predicting the arch height; the model Ma and the model Mb are compared to predict an arch height value and an actual arch height value, variance analysis is adopted, an LSD method is used for pairwise comparison, a Bland-Altman method is used for consistency check, and therefore the effectiveness and the accuracy of the model Ma are verified; setting the verified model as Mn, and adding the Mn into the model library in the step 3; repeatedly executing the model for N times until a newest model Mnow is obtained; pre-operation related parameter values are applied to the model M, and a post-operation arch height value is obtained through prediction and analysis. According to the scheme, the comparison model library can be increased along with the increase of the number of the sample groups, so that cyclic comparison verification can be realized, the obtained arch height prediction model has a good prediction effect, and the result is relatively accurate.

The present invention relates to a posterior chamber phakic intraocular lens (1) comprising a central optical part (2), a peripheral haptic part (3) having distal support elements (4) arranged for supporting the intraocular lens (1) on a ciliary zonule, elongated flexible footplates (5) mounted on the support elements (4), each having a distal lateral border (53) arranged for stabilizing the intraocular lens (1) into a ciliary body (98), and manipulation pockets (6) on a surface of the support elements (4), each being associated with one of the elongated flexible footplates (5).