METHOD FOR MEASURING INTRAOCULAR LENS POWER WITH INTRACAPSULAR FIXATION FOLLOWING PREVIOUS EXCIMER LASER KERATECTOMY Russian patent published in 2014 - IPC A61F9/00 A61F2/16 

FIELD: medicine.

SUBSTANCE: eye length (L), curve radius of the anterior surface of the cornea (R), intraocular lens constant A (A), curve radius of the posterior lens of the cornea (R_P), corneal diameter (d) and corneal thickness in the centre (H) are measured. The intraocular lens power (Diol) is measured by formula: $$D_{iol}=\frac{1336\left(1336-L\frac{333}{R}\right)}{\left(L-p\right)\left(1336-p\frac{333}{R}\right)},$$ wherein p is a distance of the anterior surface of the intraocular lens and an apex of the cornea following an excimer laser keratectomy, mm. The p value is determined as: $$p=R_P-\sqrt{R_P^2-\frac{{\left(d-\mathrm{1,82}\right)}^2}{4}}+\mathrm{0,62467}A+H-\mathrm{70,983.}$$

EFFECT: method enables providing more accurate measurement of the intraocular lens power with intracapsular fixation following the previous excimer laser keratectomy ensured by taking into account the curve radius of the anterior surface of the cornea, the diameter of the cornea and the intraocular lens constant A.

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