Idiopathic Macular Hole: Algorithm for Nonsurgical Closure Based on Literature Review

Our purpose is to review the closure time and optical coherence tomography (OCT) biomarkers that result in the non-surgical repair of idiopathic full-thickness macular holes (IFTMH). Our methodology consisted of a comprehensive literature review of the nonsurgical resolution of IFTMH followed by the calculation of the estimated closure time using the structural equation model. Forty-nine studies were found eligible yielding 181 eyes with IFTMH: 81.1% being small holes (< 250 µm) with a median diameter of 166 µm. Final vision (mean 20/41) was related to initial vision (mean 20/65) and mean age (67 years). The hole diameter was correlated with initial vision and closure time (mean 3.9 months). Closure time was related to hole diameter and initial vision in the following algorithm: Closure time (month)= - 0.057 + 0.008 diameter (µm) + 0.021 age (year) + 2.153 initial vision (logMAR). Biomarkers by OCT for self-closure included in decreasing frequency: pointed edge, de-turgescence of cystic macular edema (CME) with reversal of bascule bridge, and vitreomacular traction (VMT) release. The crucial function of Muller cell bridging in sealing the hole attests to its exceptional capacity for regeneration. After the hole has begun to close; however in less than 5%, a delayed restoration of the ellipsoid layer or a persistent outer foveal defect may prevent visual recovery and reopening of the hole is possible. In conclusion, eyes with small-size IFTMH and good baseline vision can have the additional option of close OCT monitoring for biomarkers of self-sealing biomarkers. When rehabilitative activity seems to be lacking, surgery is therefore mandatory.

A hypothetical therapeutic effect of light peripheral panretinal photocoagulation in neovascular age-related macular degeneration

Background

Vascular endothelial growth factor (VEGF) is a significant modulator of ocular angiogenesis, including that of neovascular age-related macular degeneration (nAMD). Intravitreal injection of anti-VEGF is the benchmark treatment for most retinal vascular diseases, including nAMD, diabetic maculopathy, and macular edema secondary to retinal venous occlusion. Anti-VEGF treatment is a high-frequency, time-consuming, non-cost-effective therapy, especially in countries and regions with limited resources. This treatment is easily restricted, and in practice, maintaining long-term periodic care is challenging for patients.

Hypothesis

Light peripheral panretinal photocoagulation (PPRP) is applied in a mild form (barely visible mild light gray mark) anterior to the equator so as not to jeopardize the visual field. PPRP lessens the ischemia that causes neovascularization and decreases the metabolic demand in the peripheral retina. PPRP reduces serum angiopoietin-2 and VEGF levels in patients with type 2 diabetes mellitus with proliferative diabetic retinopathy. We propose using light PPRP to suppress VEGF secretion, aiming to attenuate the VEGF drive and halt choroidal neovascular growth in eyes with nAMD. Our regimen is based on two concepts: first, nAMD is a diffuse or generalized disease that affects the posterior segment; and second, PPRP is very effective in regressing diabetic retinopathy. PPRP has reportedly been successful in cases of macular edema (diabetic or following venous occlusion) resistant to VEGF antagonists. Light PPRP may be used as prophylaxis, adjunctive treatment, or monotherapy in nAMD when intravitreal injections of VEGF antagonists are not feasible.

Conclusions

The established light PPRP therapy could be promising as a one-time, cost-effective therapy or prophylaxis in patients with nAMD or at high risk. This proposed modality could be suitable for patients who have injection phobia or prefer a one-time affordable therapy to the long-term monthly visits to retinologists. Future trials are necessary to verify the safety and efficacy of this proposed treatment modality in selected patients with nAMD.

Reply to Otiti-Sengeri et al. Chorioretinitis among Immigrant and Travellers. Comment on "Mansour et al. Presumed Onchocerciasis Chorioretinitis Spilling over into North America, Europe and Middle East. Diagnostics 2023, 13, 3626"

The comments by Otiti et al [...].

Surgical Approaches to Serous Retinal Detachment With Retina-Lens Touch in Eyes With Nanophthalmos

Purpose:To describe the visual outcomes and problems that resulted from surgical treatment of nanophthalmic complete retinal detachment (RD) with retina-lens contact. Methods: A multicenter retrospective case series with deep sclerectomy as a treatment was performed. Results: Five cases had extensive deep sclerectomies, 3 with intended drainage of subretinal fluid (SRF). The RD resolved 1 week postoperatively in 4 cases and within 1 month in 1 case. The visual acuity improved from light perception to a median of 20/100. Three cases had longstanding lens touch beyond 1 year and improved VA to 20/100, 20/150, and hand motions, respectively. Complications included focal lens dialysis in 2 cases (passive drainage of SRF) and lens or intraocular lens dislocation in 1 case each (active drainage of SRF). Ultrasound biomicroscopy and anterior optical coherence tomography showed a very narrow angle and short zonules. Conclusions: Deep sclerectomy results in good anatomic and functional improvements in advanced cases of nanophthalmos exudative detachment, which is often considered to be incurable.