Kang Yeun Pak1, Keun Heung Park, Kyong Ho Kim, Sung Who Park, Ik Soo Byon, Hyun Woong Kim, In Young Chung, Joo Eun Lee, Sang Joon Lee, Ji Eun Lee. 1. *Department of Ophthalmology, School of Medicine, Pusan National University, Busan, Korea; †Medical Research Institute, Pusan National University Hospital, Busan, Korea; ‡Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea; §Department of Ophthalmology, Busan Paik Hospital, College of Medicine, Inje University, Busan, Korea; ¶Department of Ophthalmology, School of Medicine, Gyeongsang National University, Jinju, Korea; **Department of Ophthalmology, Haeundae Paik Hospital, College of Medicine, Inje University, Busan, Korea; and ††Department of Ophthalmology, College of Medicine, Kosin University Hospital and Institute of Medicine, Kosin University, Busan, Korea.
Abstract
PURPOSE: To investigate retinal displacement in the macula after surgical closure of idiopathic macular hole and to identify factors correlated with displacement. METHODS: This retrospective multicenter study included 73 eyes of 73 patients having idiopathic macular hole. A custom program was developed to compare the position of the retinal vessels in the macula between preoperative and postoperative photographs. En face images of a 6 mm × 6 mm optical coherence tomography volume scans were registered to calculate the scale. A grid comprising 16 sectors in 2 rings (inner; 2-4 mm and outer; 4-6 mm) was superimposed. The displacement of the retinal vessels was measured as a vector value by comparing the location of the retinal vessels in each sector. The correlation between displacement and various clinical parameters was analyzed. RESULTS: The average displacement was 57.2 μm at an angle of -3.3° (nasal and slightly inferior). Displacement was larger in the inner ring (79.2 μm) than in the outer ring (35.3 μm, P < 0.001), and larger in the temporal sectors than in the corresponding nasal sectors (P ≤ 0.008). Inferior and superior displacement was noted in the superior and inferior sectors, respectively. Multiple regression analysis revealed that basal horizontal macular hole diameter and size of internal limiting membrane removal were independent factors of displacement. CONCLUSION: The macula was displaced centripetally, nasally, and slightly inferiorly after surgical closure of idiopathic macular hole. Hole closure, contraction of the nerve fiber layer, and gravity are the suggested mechanisms of macular displacement caused by internal limiting membrane peeling.
PURPOSE: To investigate retinal displacement in the macula after surgical closure of idiopathic macular hole and to identify factors correlated with displacement. METHODS: This retrospective multicenter study included 73 eyes of 73 patients having idiopathic macular hole. A custom program was developed to compare the position of the retinal vessels in the macula between preoperative and postoperative photographs. En face images of a 6 mm × 6 mm optical coherence tomography volume scans were registered to calculate the scale. A grid comprising 16 sectors in 2 rings (inner; 2-4 mm and outer; 4-6 mm) was superimposed. The displacement of the retinal vessels was measured as a vector value by comparing the location of the retinal vessels in each sector. The correlation between displacement and various clinical parameters was analyzed. RESULTS: The average displacement was 57.2 μm at an angle of -3.3° (nasal and slightly inferior). Displacement was larger in the inner ring (79.2 μm) than in the outer ring (35.3 μm, P < 0.001), and larger in the temporal sectors than in the corresponding nasal sectors (P ≤ 0.008). Inferior and superior displacement was noted in the superior and inferior sectors, respectively. Multiple regression analysis revealed that basal horizontal macular hole diameter and size of internal limiting membrane removal were independent factors of displacement. CONCLUSION: The macula was displaced centripetally, nasally, and slightly inferiorly after surgical closure of idiopathic macular hole. Hole closure, contraction of the nerve fiber layer, and gravity are the suggested mechanisms of macular displacement caused by internal limiting membrane peeling.
Authors: Raul Velez-Montoya; J Abel Ramirez-Estudillo; Carl Sjoholm-Gomez de Liano; Francisco Bejar-Cornejo; Jorge Sanchez-Ramos; Jose Luis Guerrero-Naranjo; Virgilio Morales-Canton; Sergio E Hernandez-Da Mota Journal: Int J Retina Vitreous Date: 2018-02-19
Authors: Sun Ho Park; Keun Heung Park; Hwa Yeong Kim; Jae Jung Lee; Han Jo Kwon; Sung Who Park; Ik Soo Byon; Ji Eun Lee Journal: Retina Date: 2021-05-01 Impact factor: 3.975