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Retinal Sensitivity before and after Silicone Oil Removal Using Microperimetry
Ghada A Nassar1, Maha M Youssef1, Lameece M Hassan1
1Department of Ophthalmology, Cairo University, Faculty of Medicine, Cairo 11562, Egypt.
Journal of Ophthalmology
|May 18, 2019
Summary
Silicone removal after vitrectomy for retinal detachment significantly improves vision and retinal sensitivity. This study shows positive outcomes for patients undergoing this procedure, regardless of tamponade duration.
Area of Science:
- Ophthalmology
- Retinal Surgery
- Visual Neuroscience
Background:
- Macula-off retinal detachment requires surgical intervention, often involving vitrectomy and intraocular tamponades like silicone oil.
- Silicone oil tamponade is used to maintain retinal stability post-surgery but may impact retinal function.
- Assessing the functional recovery of the retina after silicone oil removal is crucial for understanding long-term visual outcomes.
Purpose of the Study:
- To evaluate the impact of silicone oil removal on retinal sensitivity using microperimetry.
- To compare the changes in retinal sensitivity and visual acuity before and after silicone oil removal in patients with macula-off retinal detachment.
- To investigate potential differences in outcomes based on the duration of silicone tamponade.
Main Methods:
- A cohort of 22 patients undergoing silicone oil removal after vitrectomy for macula-off retinal detachment was studied.
- Patients were stratified into two groups based on silicone tamponade duration: <3 months (Group A) and 3-6 months (Group B).
- Retinal sensitivity and best-corrected visual acuity were measured using microperimetry one day before and one month after silicone oil removal.
Main Results:
- Both groups showed a significant improvement in best-corrected visual acuity (LogMAR) postoperatively.
- Mean intraocular pressure (IOP) decreased significantly after silicone removal in both groups.
- Overall retinal sensitivity demonstrated a statistically significant increase in both Group A (5.68 dB to 8.70 dB) and Group B (7.00 dB to 9.83 dB) post-removal.
Conclusions:
- Silicone oil removal following vitrectomy for macula-off retinal detachment leads to a significant enhancement in overall retinal sensitivity.
- The procedure also results in significant improvements in best-corrected visual acuity and a reduction in intraocular pressure.
- No significant difference in the improvement of retinal sensitivity was observed between patients with shorter (<3 months) versus longer (3-6 months) silicone tamponade durations.
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