Stereoacuity Following LASIK

Author(s):

Hassan Razmjoo , Mohammad , Reza Akhlaghi , Ali , Reza Dehghani , Ali , Reza Peyman , Mohammad Sari , Mohammadli , Hooman Ghatreh , Samani

Message:
Abstract:
Purpose
To evaluate the effect of laser in situ keratomileusis (LASIK) on stereoacuity (SA).
Methods
This prospective study includes 200 patients scheduled for LASIK. SA was evaluated preoperatively and one week, one month and three months postoperatively using the Random Dot test. Patients with preoperative SA worse than 480 sec/arc were excluded from the study.
Results
The study included 138 female (69%) and 62 male (31%) subjects. Spherical equivalent was -0.5 to -12.0 D. Mean preoperative SA was 124.80±124.64 (range 480-15) sec/arc which deteriorated to 138.30±126.48 sec/arc one week after surgery (P=0.158) but improved to 111.30±112.15 sec/arc (P=0.002) one month and 103.65+112.20 sec/arc (P=0.001) three months postoperatively. Overall, stereoacuity decreased in 9.5%, increased in 32.5% and remained unchanged in 58% of patients (P=0.007). Patients with anisometropia had worse SA; eventually, SA increased in 5 non-amblyopic anisometropic patients.
Conclusion
Despite the overall improvement in mean SA after LASIK, a minority of patients experienced decreased SA. Anisometropic patients without amblyopia seem to have a chance for improved SA after LASIK.
Language:
English
Published:
Journal of Ophthalmic and Vision Research, Volume:3 Issue: 1, Spring and Summer 2008
Page:
28
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