Shruti Senthilkumar

Rhegmatogenous retinal detachment (RRD) is an ophthalmic emergency characterized by the separation of the neurosensory retina from the retinal pigment epithelium, typically requiring prompt surgical intervention to optimise visual outcomes. Among the most important determinants of functional prognosis is the macular status at presentation: whether the fovea remains attached (“macula‑on”) or has detached (“macula‑off”).

Historically, macula‑on RRD has been prioritized as a vitreoretinal emergency to preserve central vision, while macula‑off RRD has been considered relatively less urgent, with a wider window for surgical repair.

Recent evidence sheds more light on defining these timeframes to optimise visual prognosis.

Macular Status and Visual Prognosis

Macula‑on RRD generally presents with superior visual acuity and has a better functional prognosis after repair compared with macula‑off RRD. When the macula remains attached, central photoreceptors are less disrupted. In contrast, once the macula detaches, photoreceptor misalignment and outer retinal degeneration can limit visual recovery even after successful reattachment. Real-world long-term cohort data confirm that macula-on cases have significantly better BCVA at 10 years compared with macula-off cases, with 93% of macula-on patients achieving BCVA sufficient for UK driving standards compared to 65% of macula-off (1).

Surgical Timing

A comprehensive meta-analysis of ~1,900 eyes reported that repair within 24 hours of presentation was associated with superior final BCVA compared with repair after 24 hours, albeit with modest effect sizes (2). This reduced the risk of progression to macula-off detachment.

The same meta-analysis found that for macula‑off detachment repair within 0–3 days from symptom onset was associated with better final BCVA compared with repair at 4–7 days (2).

A direct comparative study found that final VA in macula‑on eyes (mean logMAR ~0.04) was statistically similar to that of macula‑off eyes with short duration of macular detachment (≤3 days), but was significantly better than macula‑off detachments with 4–7 days or ≥8 days of detachment. This suggests that earlier intervention within 72 hours for macula-off RDD is associated with better visual outcomes (3).

These findings challenge the traditional view that macula‑off RRD can be delayed without functional consequence and suggest a time‑sensitive window exists within the first week of symptom onset.

Current guidance

NICE recommends urgent referral and early surgical management for RRD, but does not provide detailed surgical timing criteria based on macular status (4). RCOpth guidance states that if the macula is about to detach, surgery must be carried out urgently, ideally within 24 hours, to prevent visual loss. RCOpth states if the macula has already detached, the timing of surgery is generally less urgent, and a delay of up to ~7 days is less likely to affect the outcome compared with macula-on detachments.

Conclusion

Current evidence supports earlier repair of macula-off cases compared to current practise to improve visual outcomes.

Bibliography

1. Hazelwood JE, Mitry D, Singh J, Bennett HGB, Khan AA, Goudie CR. The Scottish Retinal Detachment Study: 10-year outcomes after retinal detachment repair. Eye. 2025 May;39(7):1318–21.

2. Sothivannan A, Eshtiaghi A, Dhoot AS, Popovic MM, Garg SJ, Kertes PJ, et al. Impact of the Time to Surgery on Visual Outcomes for Rhegmatogenous Retinal Detachment Repair: A Meta-Analysis. Am J Ophthalmol. 2022 Dec;244:19–29.

3. Lee CS, Shaver K, Yun SH, Kim D, Wen S, Ghorayeb G. Comparison of the visual outcome between macula-on and macula-off rhegmatogenous retinal detachment based on the duration of macular detachment. BMJ Open Ophthalmol [Internet]. 2021 Mar 11 [cited 2026 Feb 4];6(1). Available from: https://bmjophth.bmj.com/content/6/1/e000615

4. Retinal detachment | Health topics A to Z | CKS | NICE [Internet]. [cited 2026 Feb 4]. Available from: https://cks.nice.org.uk/topics/retinal-detachment/