Posters

Treatment of mixed astigmatism with highly cylinder on microscan visum 1100 HZ

Poster Details

First Author: М.Яблоков RUSSIA

Co Author(s):    М. Яблоков                    

Abstract Details

Purpose:

To analyze the visual, refractive and aberrometric results of wavefront-guided Femto-Lasik for the correction of mixed astigmatism with medium and high cylinder using the Microscan Visum 1100 Hz excimer laser, Intralase FS150 Femto Laser and L80 Wave + aberrometer

Setting:

Kostroma Ophthalmology Clinic “Eye Surgery”, Russia

Methods:

The study involved 72 patients (98 eyes) (20-67 years old) with primary mixed astigmatism from 2.0 to 7.5 D. In all cases, the FemtoLASIK operation was performed using the new generation excimer laser Microscan Visum 1100 Hz with reduced thermal load on the stroma, with static and dynamic control of cyclotorsia, with the calculation of the ablation profile of mixed astigmatism based on the wavefront and a femtosecond platform to create a corneal flap. The results of surgical correction of astigmatism were considered on the basis of vector analysis.

Results:

A significant decrease in the hyperopic sphere was observed from 1.49 D to the 0.76 D (P = 0.001), the cylinder from -4.11 D to -0.76 D with an associated improvement of uncorrected distance visual acuity. The best corrected visual acuity remained unchanged for 79 eyes (80%), while 2 eyes (2%) lost 2 lines. The postoperative spheroequivalent for 67 eyes (68%) was within ± 0.5 D of emmetropia, and 93 (94%) within ± 1.0 D of emmetropia; 3,9% of eyes were retreated. The targeted and surgically induced astigmatism magnitudes were 4,02 D and 4,14 D

Conclusions:

A significant decrease in the hyperopic sphere was observed from 1.49 D to the 0.76 D (P = 0.001), the cylinder from -4.11 D to -0.76 D (P = 0.001) with an associated improvement of uncorrected distance visual acuity (P = 0.001). The best corrected visual acuity (CDVA) remained unchanged for 79 eyes (80%), while 2 eyes (2%) lost 2 lines of CDVA. The postoperative spheroequivalent for 67 eyes (68%) was within ± 0.5 D of emmetropia, and 93 (94%) within ± 1.0 D of emmetropia;

Financial Disclosure:

None