Two years results of unilateral lateral rectus recession on moderate intermittent exotropia

This survey was performed to determine the effect of unilateral lateral rectus recession in treatment of moderate angle intermittent exotropia. However, this type of operation and its long term results in patients with moderate angle exotropia have not yet been studied in Iran. Forty patients with basic type intermittent exotropia with moderate angle deviation [25-30 delta D] were included in this study. All patients underwent unilateral lateral rectus recession [8 mm] in the relatively non-dominant eye. Patients were visited and examined after operation, 1 day, 1 week and 1 month later and then, every 6 months up to 3 years. Data were analyzed by t-paired test. Before operation all patients had 25-30delta D basic type intermittent exotropia. Two months after operation perfect orthophoria was observed in 33 [82.5%] subjects,

Oculocardiac reflex in laser in situ keratomileusis

This study was conducted to evaluate variations in heart rate and to determine the occurrence of oculocardiac reflex [OCR] during laser in situ keratomileusis [LASIK]. This descriptive, prospective study was designed to observe the effect of suction ring and ablation stages during LASIK procedure on the heart rate. The ECG was taken before and during LASIK operation on the first eye in 61 patients. These patients were selected randomly among cases that presented to Al-Zahra Hospital, Isfahan, Iran for LASIK surgery in summer 2001. All patients were healthy without history of cardiovascular disease and no systemic medication. The ECG prior to the procedure was considered as baseline. Decrease in the heart rate of 10% or more of baseline was considered as oculocardiac reflex. In 12 patients [20%] the heart rate decreased more than 10% during the suction ring stage. In 19 patients [31%] the heart rate increased more than 20% of baseline. In 15 patients [25%] the heart rate increased 10%-20% more than baseline during the preparation and ablation stages. In the remaining 15 patients [25%] the heart rate did not change during the procedure. Results of this study confirm that oculocardiac reflex may occur during the LASIK procedure especially in the suction ring stage. Because the oculocardiac reflex may cause heart rate changes during LASIK, the patients should be closely monitored during the procedure