Preoperative duration of retinal detachment and preoperative central retinal artery hemodynamics: repercussion on visual acuity |
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Authors: | Manuela Roldán-Pallarés Abdalla-Sadiq Musa Julián Hernández-Montero Carmen Bravo-Llatas |
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Institution: | (1) Department of Ophthalmology, Facultad de Medicina, Universidad Complutense, Madrid, Spain;(2) Computational Service, Department of Mathematics, Facultad de Ciencias Exactas, Universidad Complutense, Madrid, Spain;(3) Ophthalmology Service, Hospital Clínico San Carlos, Madrid, Spain;(4) Radiology Service, Hospital Clínico San Carlos, Madrid, Spain;(5) Rey Francisco 11, 3°, 28008 Madrid, Spain |
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Abstract: | Purpose To analyze if preoperative duration of primary rhegmatogenous retinal detachment (RD) influences preoperative central retinal
artery (CRA) hemodynamics with repercussions on logarithmic (LogMAR) visual acuity (VA).
Methods Prospective clinical cohort study on 66 healthy patients (33 with proliferative vitreoretinopathy (PVR) and 33 with no PVR)
with unilateral RD candidates for scleral buckling (SB) surgery (PVR <C3) as a first and single surgical procedure. CRA Doppler
sonography parameters (peak systolic, end diastolic velocities and resistibility index) and IOP were measured before SB. Pearson’s
correlations were evaluated between preoperative RD duration and each preoperative CRA parameter, and also between both variables
and the LogMAR VAs (preoperative, postoperative 8 months, and the difference: postoperative 8 months minus preoperative).
Results Preoperative duration of RD was correlated (with statistical significance both PVR and no PVR) with pre- and postoperative
8 months LogMAR VAs (both positive correlations), with preoperative IOP (negative correlation), and with preoperative CRA
parameters (negative correlations with CRA velocities and positive correlation with resistibility index). Preoperative CRA
parameters (correlated with preoperative IOP in PVR) were correlated (negatively for CRA velocities and positively for CRA
RI) with LogMAR VAs (preoperative, postoperative 8 months, and difference) in PVR. The average preoperative RD duration was
longer in the PVR group than in the no PVR group (p < 0.0001). A longer preoperative RD duration was associated with macula-off in both groups. Macula-off and PVR respectively
showed lower preoperative IOP and lower preoperative CRA velocities than macula-on and no PVR.
Conclusions Preoperative CRA parameters and LogMAR VAs (pre-, and postoperative 8 months) were influenced by preoperative RD duration
in both no PVR and PVR. Preoperative CRA parameters were correlated with LogMAR VAs (pre-, postoperative 8 months, and the
difference) only in PVR. Postoperative 8 months and preoperative LogMAR VAs were only correlated (with statistical significance)
in macula-on cases of both the PVR and no PVR groups. |
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Keywords: | Retinal detachment Duration Central retinal artery Color-Doppler imaging Visual acuity |
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