Journal of Clinical and Experimental Ophthalmology
Open Access
ISSN: 2155-9570
ISSN: 2155-9570
Mario Henrique Camargos de Lima, Alex Roque Rizzi, Rosangela Aparecida Simoncelli, Fernando Betty Cresta, William Camargos de Lima, Gustavo Victor and Milton Ruiz Alves
S�£o Paulo University, Brazil
Posters & Accepted Abstracts: J Clin Exp Ophthalmol
Background: The implant of intrastromal corneal rings in mild Keratoconus patients is controversial. Purpose: To evaluate in a homogeneous group of mild Keratoconus patients if the intrastromal corneal ring is a good therapeutic choice. Methods: A group of 65 patients with mild Keratoconus were submitted to an implant of Ferrara ring in a single eye. We measured 6 months after the surgery the visual function using clinical dice, and aberrometry. The aberrations especially coma were described independently. Results: There was improvement in UCVA, BCVA and refractometry index in all cases (p <0.001). It was observed that the mean UCVA ranged from 1.09�±0.40 to 0.67�±0.39 LogMAR, the BCVA ranged from 0.45�±0.22 to 0.23�±0.18 LogMAR. We also observed significant reduction of refractometric indices; the spherical equivalent ranged from -3.65�± 3.30 D to -2.32 �±2.87 D, and the cylinder was ranged from 3.99�±1.51 D to -2.24�±2, 03 D. The analysis of higher-order aberrations separately showed reduction of the TILT 5.26�±2.38 to 3.16�±1.79 and the coma from 1.77�±0.71 to 1.31�±0.75. The other analyzed aberrations (tetrafoil, spherical aberration and high order astigmatism, showed a significant increase (p <0.001). The analysis of the sum of higher-order aberrations showed no statistically significant increase. Conclusion: The intrastromal corneal ring implant in patients with early Keratoconus is a safe and effective procedure, with good topographic, refractive and wave front results.