Macular morphometrics in foveal displacement following full thickness macular hole surgery
Purpose: To investigate if the ratio of the preoperative nasal and temporal “arms” of the macular hole (MH) can have a predictive value in the magnitude of foveal displacement postoperatively. Methods: This is retrospective interventional case series of eyes of 40 patients with full-thickness macula...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wolters Kluwer Medknow Publications
2020-01-01
|
| Series: | Indian Journal of Ophthalmology |
| Subjects: | |
| Online Access: | http://www.ijo.in/article.asp?issn=0301-4738;year=2020;volume=68;issue=7;spage=1436;epage=1440;aulast=Nair |
| _version_ | 1828490324722319360 |
|---|---|
| author | Unnikrishnan Nair Ashwin Mohan K R Sheera Asmita Indurkar Manoj Soman |
| author_facet | Unnikrishnan Nair Ashwin Mohan K R Sheera Asmita Indurkar Manoj Soman |
| author_sort | Unnikrishnan Nair |
| collection | DOAJ |
| description | Purpose: To investigate if the ratio of the preoperative nasal and temporal “arms” of the macular hole (MH) can have a predictive value in the magnitude of foveal displacement postoperatively. Methods: This is retrospective interventional case series of eyes of 40 patients with full-thickness macular hole (FTMH), which underwent vitrectomy with internal limiting membrane (ILM) peeling and had Type 1 closure.All subjects underwent pre and postoperative optical coherence tomography (OCT, Heidelberg, Spectralis, Germany). Their pre and postoperative foveo-papillary distance (FPD) was measured and the magnitude of shift was calculated. The nasal and temporal arm lengths, their ratio (N/T ratio), and the hole base diameter were measured in the preoperative OCTs.The main outcome measure was the correlation of the N/T ratio with the postoperative foveal displacement. Results: We observed that in 25% (n = 10) the fovea shifted temporally; in 75% (n = 30) it shifted nasally. The shift did not show a significant correlation with either N/T ratio (r = 0.155, P = 0.34) or with base diameter (r = -0.008, P = 0.961). The odds ratio (OR) was 4.92 (P = 0.04) and the relative risk (RR) was 3.12 (P = 0.039) for a longer temporal segment to predict a temporal shift. Conclusion: Both nasal and temporal shifts are possible after successful hole closure and temporal shifts can also occur in a significantly high proportion of patients. Temporal shifts are more likely in eyes with a longer temporal segment. |
| first_indexed | 2024-12-11T10:42:42Z |
| format | Article |
| id | doaj.art-a6e34da5e8fa4a4ba628b99c48e27a3e |
| institution | Directory Open Access Journal |
| issn | 0301-4738 1998-3689 |
| language | English |
| last_indexed | 2024-12-11T10:42:42Z |
| publishDate | 2020-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Indian Journal of Ophthalmology |
| spelling | doaj.art-a6e34da5e8fa4a4ba628b99c48e27a3e2022-12-22T01:10:33ZengWolters Kluwer Medknow PublicationsIndian Journal of Ophthalmology0301-47381998-36892020-01-016871436144010.4103/ijo.IJO_1845_19Macular morphometrics in foveal displacement following full thickness macular hole surgeryUnnikrishnan NairAshwin MohanK R SheeraAsmita IndurkarManoj SomanPurpose: To investigate if the ratio of the preoperative nasal and temporal “arms” of the macular hole (MH) can have a predictive value in the magnitude of foveal displacement postoperatively. Methods: This is retrospective interventional case series of eyes of 40 patients with full-thickness macular hole (FTMH), which underwent vitrectomy with internal limiting membrane (ILM) peeling and had Type 1 closure.All subjects underwent pre and postoperative optical coherence tomography (OCT, Heidelberg, Spectralis, Germany). Their pre and postoperative foveo-papillary distance (FPD) was measured and the magnitude of shift was calculated. The nasal and temporal arm lengths, their ratio (N/T ratio), and the hole base diameter were measured in the preoperative OCTs.The main outcome measure was the correlation of the N/T ratio with the postoperative foveal displacement. Results: We observed that in 25% (n = 10) the fovea shifted temporally; in 75% (n = 30) it shifted nasally. The shift did not show a significant correlation with either N/T ratio (r = 0.155, P = 0.34) or with base diameter (r = -0.008, P = 0.961). The odds ratio (OR) was 4.92 (P = 0.04) and the relative risk (RR) was 3.12 (P = 0.039) for a longer temporal segment to predict a temporal shift. Conclusion: Both nasal and temporal shifts are possible after successful hole closure and temporal shifts can also occur in a significantly high proportion of patients. Temporal shifts are more likely in eyes with a longer temporal segment.http://www.ijo.in/article.asp?issn=0301-4738;year=2020;volume=68;issue=7;spage=1436;epage=1440;aulast=Nairfoveal shiftfull-thickness macular holeshole base diameternasal segment/temporal segmentpost-operative optical coherence tomography |
| spellingShingle | Unnikrishnan Nair Ashwin Mohan K R Sheera Asmita Indurkar Manoj Soman Macular morphometrics in foveal displacement following full thickness macular hole surgery Indian Journal of Ophthalmology foveal shift full-thickness macular holes hole base diameter nasal segment/temporal segment post-operative optical coherence tomography |
| title | Macular morphometrics in foveal displacement following full thickness macular hole surgery |
| title_full | Macular morphometrics in foveal displacement following full thickness macular hole surgery |
| title_fullStr | Macular morphometrics in foveal displacement following full thickness macular hole surgery |
| title_full_unstemmed | Macular morphometrics in foveal displacement following full thickness macular hole surgery |
| title_short | Macular morphometrics in foveal displacement following full thickness macular hole surgery |
| title_sort | macular morphometrics in foveal displacement following full thickness macular hole surgery |
| topic | foveal shift full-thickness macular holes hole base diameter nasal segment/temporal segment post-operative optical coherence tomography |
| url | http://www.ijo.in/article.asp?issn=0301-4738;year=2020;volume=68;issue=7;spage=1436;epage=1440;aulast=Nair |
| work_keys_str_mv | AT unnikrishnannair macularmorphometricsinfovealdisplacementfollowingfullthicknessmacularholesurgery AT ashwinmohan macularmorphometricsinfovealdisplacementfollowingfullthicknessmacularholesurgery AT krsheera macularmorphometricsinfovealdisplacementfollowingfullthicknessmacularholesurgery AT asmitaindurkar macularmorphometricsinfovealdisplacementfollowingfullthicknessmacularholesurgery AT manojsoman macularmorphometricsinfovealdisplacementfollowingfullthicknessmacularholesurgery |