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Uludağ Üniversitesi, Göz Hastalıkları A.D., Bursa Purpose: To investigate the effect of macular detachment height and macular retinal thickness on visual prognosis in rhegmatogenous retinal detachment (RD) involving the macula.
Materials and Metods: Thirty-eight eyes of 38 patients (25 males, 13 females, mean age 57 years) with RD involving the macula were recruited between July 2000 and August 2001. Preoperative examination consisted of best corrected visual acuity and B-mode ultrasonography (USG) measurements. Macular detachment height and macular retinal thickness were measured with B-mode USG. For treatment, all patients underwent scleral buckling procedure. The mean postoperative follow-up was 5.8 months (2.1-12.9 mounts). The relationship between the last postoperative visual acuity and preoperative visual acuity, macular detachment height and macular retinal thickness were assessed. Correlation analysis and Mann-Whitney U tests were used for statistical analyses.
Results: There was no correlation between preoperative visual acuity and macular detachment height and macular retinal thickness (p=0.11 and p=0.31). There was also no correlation between postoperative visual acuity and macular detachment height and macular retinal thickness (p=0.12 and p=0.30). However, when patients were divided into two groups according to their postoperative acuity, the macular detachment height was significantly high in patients with a final postoperative visual acuity less than 0.4, compared to patient group with postoperative visual acuity equal to 0.4 or more (p=0.006).
Conclusion: There was no correlation between macular detachment height measured by B-mode USG and postoperative visual result. However, the macular detachment was significantly high in patients with a final postoperative visual acuity less than 0.4. There was no correlation between macular retinal thickness measured by B-mode USG and postoperative visual acuity. However, B-mode USG may not be a suitable method to evaluate macular retinal thickness because of its low sensitivity. Keywords : Macular detachment height, macular retinal thickness, rhegmatogenous retinal detachment, visual prognosis