METHOD FOR MEASURING INTRAOCULAR LENS POWER WITH INTRACAPSULAR FIXATION IN PSEUDOEXFOLIATION SYNDROME Russian patent published in 2014 - IPC A61F9/00 A61F2/16 

FIELD: medicine.

SUBSTANCE: eye length (L), curve radius of an anterior surface of the cornea (R), curve radius of a posterior surface of the cornea (R_P), the corneal diameter (d), as well as the maximum difference of lengths of the ciliary zonule fibres(S) and an intraocular lens constants A are measured. The intraocular lens power (Diol) is measured by formula: $$D_{iol}=\frac{1336\left(1336-L\frac{333}{R}\right)}{(L-p)\left(1336-p\frac{333}{R}\right)},$$ wherein 333/R is standardised corneal refraction, dptr. A distance from an anterior surface of the intraocular lens and an apex of the cornea in pseudoexfoliation syndrome (p) is determined by formula: $$p=R_P-\sqrt{R_P^2-\frac{{(d-\mathrm{1,82})}^2}{4}}+\mathrm{0,62467}A-\mathrm{70,563}-\mathrm{0,97}{e}^{-\mathrm{8,16}S}.$$

EFFECT: method enables providing more accurate measurement of the intraocular lens power with intracapsular fixation in pseudoexfoliation syndrome by taking into account the maximum difference of the lengths of the ciliary zonule fibres used for calculating the power value.

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