POSTOPERATIVE AGAINST-THE-RULE ASTIGMATIS M PROPHYLAXIS IN RADIAL KERATOTOMY

Seventy heigt patients (156 eyes) were treated by radial keratotomy. P atients with spherical axial myopia were selected (including 39 % of p hysiological astigmatism cases). After radial conventional technique t he against-the-rule astigmatism > 1.0 D is 31.6 % and between 1.0 and 2.0 D is 3.4 % versus 0.6 % (< 1.0 D) and 0.1 % (1.0-2.0 D) with the m odified technique. To decrease the frequency of the against-the-rule p ostoperative astigmatism after RK procedure we performed 1 or 2 vertic al additional flag-incisions on the horizontal meridian to counteract the effect of the corneal oedema on the superior incisions.