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Contrast sensitivity decreases after surgery for macula-on RRD
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Contrast sensitivity decreased after surgery for macula-on rhegmatogenous retinal detachment, and the extent of the retinal tear played a role in the decrease.
A prospective study comprised 84 eyes of 84 patients with unilateral macula-on rhegmatogenous retinal detachment (RRD) who successfully underwent scleral buckling or pars plana vitrectomy. Contralateral healthy eyes comprised the control group.
LogMAR best corrected visual acuity and contrast sensitivity at four spatial frequencies — 3, 6, 12 and 18 cycles/degree — were measured before and after surgery for macula-on RDD.
There was no preoperative difference in logMAR BCVA between eyes with RDD and control eyes; however, contrast sensitivity was significantly worse in eyes with RDD.
Contrast sensitivity at spatial frequencies of 6, 12 and 18 cycles/degree decreased postoperatively. There was no postoperative change in logMAR BCVA.
Circumferential dimension of retinal tears was significantly correlated with postop contrast sensitivity.
“Decreased transmittance resulting from dispersion of retinal pigment epithelial cells and damaged foveal function resulting from disruption of the blood-retinal barrier might have caused declined postoperative contrast sensitivity,” the study authors said.
Disclosure: The study authors have no relevant financial disclosures.
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