Adnan Aslam Saleem, Inayatullah Khan, Yaseen Lodhi.
Change in Ocular Axial Length after Encircling Scleral Buckle in Rhegmatogenous Retinal Detachment.
Ophthalmol Update Jan ;15(2):93-6.

Objective: To determine the mean change in axial length after encircling SB surgery in patients with RRD. Encircling scleral buckle surgery (SB) is a routinely performed procedure for repairing rhegmatogenous retinal detachment (RRD). A postoperative refractive error secondary to changes in ocular axial length (AL) is a frequent problem. Methods: Quasi experimental study was done in retina clinic of Al-Shifa trust eye hospital Rawalpindi, for a period of seven months (09-2013 to 04-2014) on sixty two patients. Results: The study included 62 eyes operated for RRD. There were 67.7% of men and 32.3% women, mean age 51 � 14.64 years. The mean preoperative and postoperative eye axial lengths were 23.37 � 1.79 mm and 24.00 � 1.78 mm respectively. Though the postoperative results showed the axial eye length to increase by a mean of 0.63 � 0.14 mm but statistically an insignificant difference from the preoperative measurement (p=0.053) was noted. The mean myopia induced by this eyeball elongation was 1.62 D. Conclusion: The encircling buckle used in surgical repair of retinal detachment creates circular indentation of the eyeball causing a clinically noticeable but statistically insignificant increase in axial length. The refractive error induced by elongation of the eyeball does results in myopia, which requires appropriate rectification in the early postoperative period to achieve encouraging vision rehabilitation.

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