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Use of the Three-dimensional Viewing System and Microscope Tilting to Extend the Peripheral Retinal View
Otman Sandali1,2, Rachid Tahiri Joutei Hassani3, Cedric Dulière2
1Centre Hospitalier National d'Ophtalmologie des XV-XX, Unit 5, Pierre & Marie Curie University, Research Team 968, Institut de la Vision, Paris, France.
Purpose:
To describe and evaluate the effectiveness of the microscope and lens tilting technique associated with the three-dimensional viewing system for improving the peripheral retinal view in noncontact lens vitreoretinal surgeries.
Methods:
Prospective, single-center, single-surgeon, consecutive case series of 25 patients undergoing vitrectomy for macular surgeries with three-dimensional visualization system. At the end of each surgery, the microscope and the noncontact lens were rotated by 20° in a direction opposite to the rotation of the eye to extend the peripheral visual field.
Results:
Microscope and lens tilting technique extended the edge of the peripheral viewing field relative to its position with the microscope untilted, by 1.72 mm (±0.37) for the superior retina and 1.93 mm (±0.42) for the inferior retina (P < 0.0001). The ora serrata was visualized in 33% and 0% of cases for the superior retina and 91% and 36% of cases for the inferior retina, in tilted and nontilted microscope positions, respectively (P < 0.01).
Conclusion:
Microscope and lens tilting could be useful to extend the peripheral visual field of view in retinal surgery. The three-dimensional system allowed to maintain surgeon comfort and posture during surgery.
