Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Science Key Lab, Beijing 100730, China
Objective To evaluate the changes in binocular vision after phakic posterior chamber implantable collamer lens (PPC-ICL) implantation for high myopia. Methods This self-control study included 84 eyes of 42 patients with high myopia who underwent PPC-ICL implantation surgery. Simultaneous perception, fusion range, and distance and near stereopsis were tested before and 6 months after surgery with a synoptophore and stereogram designed by Yan Shaoming. Results There was no significant difference in simultaneous perception before surgery compared to 6 months after surgery, while the differences in fusion range and distance stereopsis were statistically significant (χ²=0.357, P<0.01 and χ²=0.276, P<0.05). There were no significant differences in foveal stereopsis and peripheral stereopsis before surgery compared to 6 months after surgery, but there was a significant difference in stereo blindness (χ²=0.279, P<0.05). Conclusion Simultaneous perception, fusion range, and distance and near stereopsis after PPC-ICL implantation obviously improved compared to measurements taken before surgery.
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