Author: Raquel Maroto Cejudo (Spain)
Co-authors: Cristina Isabel Blanco Marchite, Teresa Prieto Morán, Antonio Donate Tercero, Carlos Cava Valenciano, Santiago Perez Pascual, Sergio Copete Piqueras
Purpose
To analyze tomographic changes in outer retinal layers after vitrectomy for rhegmatogenous retinal detachment (RD) and its association with the presence of retinal displacement.
Setting/Venue
Retrospective study that included outer retina tomographic analysis of 42 patients with RD who underwent RD surgery in 2018 and 2019 at Albacete University Hospital Complex (Spain).
Methods
Tomographic images obtained with spectral-domain optical coherence tomography (SD-OCT) at 3, 6 and 12 months after RD surgery were analyzed according to the presence or absence of alterations in outer retinal layers (external limiting membrane, ellipsoid zone and interdigitation zone). Autofluorescence images at 6 months were also observed to detect retinal displacement. Exclusion criteria were: Presence of previous retinal pathology, age under 18 years and images of insufficient quality.
Results
The mean age was 60,14 ± 10,71. Any grade of retinal displacement was detected in 50% of autofluorescence images. Alterations in external limiting membrane (ELM) layer at 3, 6 and 12 months were detected in 45,2%, 19% and 14,3% of images respectively. Changes in ellipsoid zone (EZ) were observed in 69%, 38,1% and 28,6% and changes in the interdigitation zone (IZ) were detected in 73,8 %, 42,9% and 31% respectively. Improvement in ELM layer occurred in 31% of images after 12 months, in EZ was observed in 45,2% and 47,6% in IZ. Of the total of patients with retinal displacement detected at 3 months, 17 (85%) showed alterations in the EZ, with a statistically significant difference (Chi-squared-test, p = 0,038). IZ layer showed alterations in similar proportion but no significant differences were detected (p=0.144). Association between the presence of retinal displacement and improvement of EZ at 6 and 12 months was observed (Chi-squared-test, p = 0,014 and 0.004 respectively). No other significant differences were observed at different times.
Conlusions
Retinal displacement after retinal detachment surgery is associated with higher rate of tomographic alterations in the EZ at 3 months, as with an increased probability of improvement of those changes at 6 and 12 months.
Financial Disclosure
No financial relations
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