Resolution of an abnormal preferential hyperacuity perimetry test result resulting from epiretinal membrane after successful surgical removal.
OBJECTIVE
To report resolution of an abnormal preferential hyperacuity perimetry test result resulting from idiopathic epiretinal membrane after successful pars plana vitrectomy and membrane peeling.


METHODS
An observational case report.


METHODS
A 51-year-old otherwise healthy woman presented with a gradual decrease in vision and metamorphopsia in her left eye for a duration of 3 months without any antecedent history of ocular surgery, trauma, or disorder.


RESULTS
The Snellen best-corrected visual acuity was 20/80 at presentation resulting from an epiretinal membrane on the posterior pole in the left eye. The preferential hyperacuity perimetry test was abnormal preoperatively but after successful pars plana vitrectomy and membrane peeling, the abnormality resolved completely. The final best-corrected visual acuity was 20/30 at 14 weeks postoperatively along with improvement in her metamorphopsia.


CONCLUSIONS
Epiretinal membrane can produce abnormal preferential hyperacuity perimetry findings that may disappear after its successful surgical removal. The preferential hyperacuity perimetry may be useful to monitor metamorphopsia in epiretinal membrane before and after surgery. Further investigation is warranted.
From the *The Eye Institute, Alexandra Hospital; †Eye Clinic, Jurong Medical Center; ‡The Eye Institute, Tan Tock Seng Hospital; §Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore; and ¶Singapore Eye Research Institute, Singapore.
Tiakumzuk
T
Sangtam
Bakthavatsalu
B
Maheshwar
Eidawatie
E
Rosdi
Kah-Guan
KG
Au Eong