Choroidal thickness in lamellar macular holes
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RETINAL DISORDERS
Choroidal thickness in lamellar macular holes Magdalena Kal 1,2 & Mateusz Winiarczyk 3 & Stanisław Głuszek 4,5 & Jerzy Mackiewicz 3 Received: 23 April 2020 / Revised: 24 August 2020 / Accepted: 5 September 2020 # The Author(s) 2020
Abstract Purpose (1) To assess the thickness of the central choroid (BM-CSI) in swept-source optical coherence tomography (SS-OCT) examination of lamellar macular holes (LMHs). (2) To establish correlations between the thickness of the central choroid (BMCSI) in the LHM and the parameters of best-corrected visual acuity and reading vision in patients with LMH. Methods This prospective case-control study assessed a group of 30 patients (30 eyes) with LMHs and a control group of 45 patients (90 eyes). The thickness of the central choroid (BM-CSI) was measured with an SS-OCT device. The average choroidal thickness in the fovea was defined as average thickness in the central area of 1000 μm in diameter, according to the Early Treatment Diabetic Retinopathy Study (ETDRS). The results were correlated with best-corrected visual acuity (BCVA), and reading vision. Results The average choroidal thickness in the study group (SG) with LMH was 160.34 μm (SD = 77.1), whereas in the control group (CG), it was 225.11 μm (SD = 93.8). The difference of 64.77 μm was statistically significant (p < 0.05). The BCVA was within the range between 0.7 (logMAR) and 0.1 (logMAR), with an average of 0.36 (logMAR) (SD = 0.23). Reading vision was within the range between − 0.2 (logMAR) and 0.3 (logMAR), with an average of 0.27 (logMAR) (SD = 0.12). A significant correlation between BCVA and the choroid (BM-CSI) was found. The correlation coefficient is average (r = 0.44) and positive. With better BCVA, a significantly thicker choroid (BM-CSI) can be observed. No significant correlation between BM-CSI and reading vision was found. The correlation coefficient value is minor (r = − 0.289), whereas lower values of BM-CSI can be observed with worse reading vision. Conclusion We suggest that the choroid may take part in the pathogenesis of LMH development. Its significant thinning may be responsible for the ischemic degenerative mechanism degenerating outer layers of retina, apart from tractional mechanism. Keywords Lamellar macular hole . Choroid . Choroidal thickness . Swept-source OCT . Optical coherence tomography
Introduction
This article is part of a topical collection on Macular Holes. * Jerzy Mackiewicz [email protected] 1
Institute of Medical Sciences of Jan Kochanowski University in Kielce, Kielce, Poland
2
Ophthalmic Clinic of the Provincial Hospital in Kielce, Kielce, Poland
3
Department of Vitreoretinal Surgery, Medical University of Lublin, Lublin, Poland
4
Collegium Medicum of Jan Kochanowski University in Kielce, Kielce, Poland
5
Oncological, Endocrinological and General Surgery Clinic of the Provincial Hospital in Kielce, Kielce, Poland
The choroid of the eye plays a key role in its physiology by distributing nutrients into the retinal pigment epithelium (RPE) and its
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