Purpose: To Evaluate Intacs SK (Addition technology) for management of keratocounus.
Patients and Methods: Twenty two eyes of 17 patients with keratocounus (12 males, 5 Females, ages 19 to 42 years), who completed 6 months follow up were included. Two Intacs SK segments of 0.45 mm thickness were inserted in the cornea of each eye at steepest axis, aiming at embracing the keratoconus area in order to achieve maximal flattening.
Results: The mean UCV A significantly improved from 0.12±0.13 (range, CF -0.5) to 0.38± 0.26 (range CF -0.8). Of 22 eyes, one eye lost one line of UCV A and 4 eyes maintained the preoperative UCV A whereas the rest (17 eyes) gained fonn 1-5 lines.
The mean BCVA also improved from 0.38±0.28 (range CF -0.7) to 0.62± 0.22 (range 0.2 -0.9) from 22 eyes, 7 eyes maintained the preoperative. BCV A while 15 eyes experienced a 1-6 lines gain. SE improved from -5.42± 3.62D to -3.92± 1.44D. Mean K reading improved from 51.32± 4.12 to 48.44± 3.92.
Conclusion: Intacs SK implantation improved UCV A, BCV A and K readings in keratoconic patients .
. Keratoconus is an ectatic corneal disorder characterized by a progressive corneal thinning that results in corneal protrusion irregular astigmatism, and decreased vision (I). In early stages, treatment consists of spectacles or rigid contact lenses. However some patients can become intolerant to contact lenses or achieve an unacceptable visual
perfonnance. (2)