Posters
Bandage lamellar-optical keratoplasty for post-excimer laser keratectasia
Poster Details
First Author: G.Osipyan RUSSIA
Co Author(s): V. Sheludchenko Y. Naim K. Khraystin V. Mamikonyan R. Bagh D. Safonova
Abstract Details
Purpose:
The purpose is to treat post-LASIK keratectasia (KE) with bandage lamellar-optical keratoplasty (BLOK) and to evaluate the results.
Setting:
Research Institute of Eye Diseases, 11A Rossolimo St., Moscow, Russian Federation, 119021
Center Vision Recovery, 11A Rossolimo St., Moscow, Russian Federation, 119021; 108 Lobachevskogo St., Moscow, Russian Federation, 119361.
Methods:
The study included 22 patients with post-LASIK KE, who underwent BLOK. Group I (6 patients) was implanted with a segment transplant 1.5 mm wide and 180–220 µm thick. Group II (16 patients) – with a 2.75 mm, 290–350 µm allogeneic transplant of individual length. BLOK surgical method. Femtosecond laser was used to cut a layered ring-shaped graft modelled according to the ectasia area from a preserved donor cornea, and then to form a corresponding ring-shaped intralamellar pocket in the recipient cornea. Intralamellar pocket depth was determined based on the minimal corneal thickness of the recipient. Follow-up was 4 years.
Results:
In the first group uncorrected visual acuity (UCVA) improved by 0.4±007, in the second group by 0.46±0.15. After two years, two patients had their transplant exchanged for a wider one due to ectasia progression. Corneal refraction was stable at 45.36±1.47 Diopters in all other patients of the first group. In the second group, it was consistently between 42 and 45 Diopters. LASIK corneal flap edge displacement – the most common BLOK complication in these cases – occurred in 4 patients.
Conclusions:
Bandage lamellar-optical keratoplasty proved effective in treating patients with KE after LASIK, leading to an improvement of visual acuity, strengthening of the cornea and normalisation of its surface; it slows further progression of ectasia.
Financial Disclosure:
None
