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Characterization of epiretinal membranes using optical coherence tomography
J R Wilkins1, C A Puliafito, M R Hee
1New England Eye Center, Tufts University School of Medicine, Boston, MA 02111, USA.
Ophthalmology
|December 1, 1996
Summary
Optical coherence tomography (OCT) effectively diagnoses and characterizes epiretinal membranes. OCT measurements of membrane thickness and adherence correlate with visual acuity, aiding surgical prognosis.
Area of Science:
- Ophthalmology
- Medical Imaging
- Retinal Diseases
Background:
- Epiretinal membranes (ERMs) are a common cause of visual impairment.
- Accurate diagnosis and characterization are crucial for surgical planning.
Observation:
- Optical coherence tomography (OCT) utilizes light for high-resolution imaging, analogous to ultrasound B-scans.
- 186 eyes with ERMs were analyzed using OCT over two years.
- OCT findings were correlated with visual acuity and other imaging modalities.
Findings:
- OCT clearly delineated ERM attachment in 49 eyes and global adherence in 125 eyes.
- Features like macular pseudohole and increased optical reflectivity were associated with adherent membranes.
- Mean ERM thickness was 61 ± 28 microns, with thickness correlating to visual acuity (R² = 0.73).
Implications:
- OCT provides valuable structural assessment for preoperative and postoperative evaluation of ERM surgery.
- Quantitative OCT measurements and adherence assessment can predict surgical outcomes.