Zastosowanie soczewek specjalnej odwrotnej geometrii oraz soczewek wielokrzywiznowych u pacjentów po laserowej korekcji oczu
Reverse-Geometry and Multicurve Contact Lens Fitting in Patients after Laser in situ Keratomileusis
Oxana Borissova, Ewa Pelczar
Wrocławskie Eye Laser Center Kierownik: lek. med. Ewa Pelczar
Summary: Purpose: To evaluate the clinical results of hard gas-permeable reverse-geometry contact lens fitting in eyes with irregular cornea and keratectasia after laser in situ keratomileusis (LASIK). Methods: Seven eyes of six patients with corneal irregularity after LASIK surgery were examined. A reverse-geometry Acculens New Vision ortholens design and multicurve LS-9 Lens - Serwis design were selected for the fitting. The base curve radius was determined by the patient?s corneal shape, in particular its flatness and corneal toricity. The base curve radius and peripheral parameters were tested using fluorescein test. The contact lens fitting characteristics, keratotopography and visual acuity were evaluated. Results: Reverse-geometry Acculens New Vision lenses were fitted in 6 eyes with cornea irregularity and multicurve LS-9was fitted in 1 case with keratectasia. The base curve radius of the reverse-geometry lenses ranged from 8.44 to 9.38 mm. Mid-periphery was about 4 D steeper than the central base curve, ranged from 7.67 to 8.44 mm. The base curve radius of the multicurve lens was 7.5 mm. Visual acuity improved to 0.8 ? 1.0, all patients were totally satisfied with the fitting comfort. Conclusion: The reverse-geometry and multicurve contact lens fitting based on topographic data and slit lamp evaluation allowed good visual results in patients with irregular cornea and keratectasia after laser in situ keratomileusis.