Official ESCRS | European Society of Cataract & Refractive Surgeons


Manual marking to assess the rotational stability of toric IOLs

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Session Details

Session Title: Toric IOLs & Lens Power Calculations

Session Date/Time: Sunday 15/09/2019 | 08:00-10:00

Paper Time: 08:12

Venue: Free Paper Forum: Podium 3

First Author: : S.Shukhaev RUSSIA

Co Author(s): :    A. Matveeva   A. Ulitina                          

Abstract Details


To propose a method of manual marking of the target axis of a toric IOL position, which allows to evaluate the rotational stability of the IOL in the postoperative period by the retro-illumination photo method.


S. Fyodorov Eye Microsurgery Federal State Institution. Saint-Petersburg.


45 patients underwent dosed injection of the dye into superficial layers of the corneal stroma 1 day before the FLACS with the implantation of a toric IOL was performed. The deviation of the manual marking axis from the digital one (Verion) was estimated intraoperatively. 1-3 months postoperatively the quality of the manual marking and its suitability for assessing the rotational stability of the toric IOL were assessed.


Intraoperative differences in the position of the manual and electronic marking were 1.4 ± 1.2 degrees. In one case (2.2%) the digital marking was not performed because it was impossible to match the picture of the eye with the image of the eye from an operating microscope, the registration was failed. In 3 cases (6.7%) the digital marking was not stable and showed different axes of the IOL position during eye movement. 1–3 months after surgery only one case (2.2%) failed to use manual tags to assess the rotational stability of a toric IOL using the retro-illumination slit-lamp photography method.


The proposed method of manual marking allows to implant toric IOLs during the surgery as precisely as digital marking methods, avoiding the disadvantages of the latter. The dye is stored in the corneal stroma for up to 3 months after the surgery and it allows to more accurately assess the rotational stability of the IOL using retro-illumination photo method.

Financial Disclosure:


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