General Overview

- Optic disc pit (ODP): Rare congenital anomaly (2/10,000 prevalence), typically inferotemporal, often asymptomatic.

- Optic disc pit maculopathy (ODPM): Occurs in 25–75% of ODP cases; features intraretinal schisis and serous macular detachment; leads to significant vision loss if untreated.

- Pathogenesis (controversial): Vitreous traction, CSF migration via pit, or choroidal fluid; vitreous/CSF most accepted.

- Management: Observation (e.g., pediatric cases with spontaneous resolution) or surgical intervention.

Conventional Treatment

- Pars plana vitrectomy (PPV): Gold standard for ODPM; 50–95% success rate with posterior vitreous detachment (PVD) induction alone.

  - Kohli et al.: PPV ± ILM peeling + C₃F₈; BCVA improved 20/148 to 20/48; outer layer defects linked to delayed SRF resolution.

  - Sano et al.: 88.6% retinal reattachment (12.9 months); BCVA 20/71 to 20/25; risk factors for failure: macular detachment to disc, headaches (CSF link).

- Adjuncts: ILM peeling, gas tamponade (e.g., SF₆, C₃F₈), juxtapapillary laser; efficacy debated.

Novel Surgical Techniques

- Fovea-sparing ILM flap (D’Souza et al.): PPV + inverted ILM flap + gas; BCVA 20/162 to 20/76; 70% resolution, no macular holes.

- ILM/prepapillary membrane plugging:

  - Muftuoglu et al.: ILM plug + C₃F₈; 4/6 eyes resolved (5 months); BCVA 20/355 to 20/144.

  - Inoue et al.: Prepapillary membrane plug (OCT-guided); 100% resolution (13–15 months); BCVA 20/100–20/40 to ≥20/25.

- Inner retinal fenestration:

  - Ooto et al.: Single fenestration; 3/6 had macular holes (closed with ILM peeling).

  - Wong et al.: Dual fenestrations in pediatrics; BCVA 20/100 to 20/32; 100% resolution (12 months).

- Biologic adjuncts:

  - Autologous scleral plug (Khatri et al.): 100% resolution (4.5 months); BCVA 20/76 to 20/41; vasculitis risk noted (Dsouza et al.).

  - Human amniotic membrane (hAM) graft:

    - Boscia et al.: Refractory case; BCVA 20/220 to 20/30.

    - Caporossi et al.: 81.8% resolution (4.3 months); BCVA 20/76 to 20/29.

  - Autologous platelet concentrate (APC):

    - Nadal et al.: 100% resolution (3.5 months); BCVA 20/100 to 20/33.

    - Gklavas et al.: BCVA 20/132 to 20/65 (8.6 months); 18.2% RD risk.

  - Fibrin glue (Soni et al.): 3/5 resolved (7 months); BCVA 20/96 to 20/81.

Non-Vitrectomy Approach

- Pneumatic displacement + laser:

  - Mirza et al.: C₃F₈ + laser; 66% reattachment (10.3 months); BCVA 20/160 to 20/50.

  - Elmohamady et al.: SF₆ + laser; 82% reattachment; BCVA 20/135 to 20/36.

Comparative Studies

- Pinheiro et al.: PPV + adjuncts (laser, ILM techniques); 100% reattachment; endolaser and intact ILM linked to better BCVA (20/219 to 20/54).

- Meng et al. (meta-analysis): 85% anatomic success; ILM plugging superior to gas/laser/ILM peeling alone.

- Iros et al. (multicenter): PPV (88.9% SRF resolution) outperformed laser/gas (57.1%); BCVA 20/162 to 20/66; ILM peeling tied to macular holes (4.4%).

Clinical Implications

- PPV alone effective: Resolves ODPM in most cases; adjuncts may not add benefit (except possibly ILM plugging).

- Refractory cases: Novel plugging (e.g., hAM, APC, scleral) shows promise.

- Research gaps: Small series dominate; large comparative trials needed for efficacy validation.

Key Takeaways

- Vitrectomy is first-line; success hinges on PVD induction.

- Adjuncts enhance outcomes in select cases; ILM plugging and biologics are emerging options.

- Chronic/refractory ODPM remains challenging; fluid dynamics understanding critical.

These points emphasize testable material, with bolded items (e.g., PPV as gold standard, ODPM definition, novel techniques) being high-yield for OKAP and similar exams.