Efficacy of scleral imbrication on all quadrants in enucleated pig eyes
Osamu Sawada1, Shumpei Obata2, Masashi Kakinoki2
1Department of Ophthalmology, Shiga University of Medical Science, Seta Tukinowacho, Otsu, Shiga, 520-2192, Japan. osawada@belle.shiga-med.ac.jp.
Purpose:
To evaluate the changes in axial length (AL) and corneal astigmatism induced by scleral imbrication on all quadrants in pig eyes.
Study Design:
Experimental study METHODS: We produced scleral imbrications either on all quadrants or on 2 consecutive quadrants of 5 enucleated pig eyes. Scleral imbrications 8 mm wide were made at 8 mm from the limbus on each quadrant. We determined the AL using an electronic caliper and the corneal astigmatism using a keratometer before and after the 2 types of scleral imbrications and compared the changes in ocular AL and corneal astigmatism induced by the 2 surgical procedures.
Results:
The AL reduction after the scleral imbrication on all quadrants (3.96 ± 0.56 mm) was larger than that on 2 quadrants (2.39 ± 0.41 mm) (P = .001). The change in corneal astigmatism induced by imbrication on all quadrants (2.98 ± 1.96 D) was less than that on 2 quadrants (5.95 ± 2.04 D) (P < .029).
Conclusions:
Scleral imbrication on all quadrants induced a shorter AL and less corneal astigmatism than did a standard scleral imbrication on 2 quadrants. Therefore, the former could be a more effective operation for retinal disorders associated with high myopia, including macular hole retinal detachment and myopic foveoschisis.
More Related Videos
05:56Scleral Cross-linking Using Riboflavin and Ultraviolet-A Radiation for Prevention of Axial Myopia in a Rabbit Model
Published on: April 3, 2016
12:45Development of a Refined Protocol for Trans-scleral Subretinal Transplantation of Human Retinal Pigment Epithelial Cells into Rat Eyes
Published on: August 12, 2017