Longitudinal assessment of cone structure and lesion remodeling in laser-induced retinopathy.

Fang D, Hei X, Chen L, +9 more, Chi W.

Observational StudyOpen access

AI summary — for doctors, generated from the abstract only

In a small prospective study using advanced retinal imaging, laser-induced retinal injury lesions showed spontaneous shrinkage and local photoreceptor reorganization over 6 months, accompanied by improved local retinal sensitivity.

What was studied

A prospective longitudinal observational study of 13 patients (15 eyes) with laser-induced retinopathy, using adaptive optics scanning laser ophthalmoscopy (AO-SLO), OCT, and microperimetry at baseline and 6-month follow-up to assess changes in lesion area, cone photoreceptor density/spacing, ellipsoid zone disruption, and retinal sensitivity.

Key findings

Lesion area significantly decreased from 97,128 ± 107,478 µm² to 27,560 ± 26,901 µm² (P=0.031).
Perilesional cone density increased from 27,942 ± 6970 to 36,700 ± 9257 cones/mm² (P=0.010), and cone spacing decreased from 4.71 ± 0.57 to 4.25 ± 0.57 µm (P=0.040).
Ellipsoid zone disruption length remained stable (203 ± 181 µm to 195 ± 173 µm, P=0.64), while lesion-specific retinal sensitivity significantly improved from 19.25 ± 4.37 dB to 26.43 ± 1.56 dB; the exact p-value for sensitivity was not legible in the provided abstract text.

Clinical relevance

The findings suggest the human retina has some capacity for microstructural recovery and reorganization after laser injury, which may be relevant to prognostic counseling for patients with laser-induced retinopathy, and highlights AO-SLO as a sensitive tool for detecting such cellular-level changes.

Who should care

Ophthalmology

Limitations

This was a small study (13 patients, 15 eyes) without a control/comparison group, and the 6-month follow-up period may not capture longer-term outcomes.

Laser-induced retinal injury showed measurable lesion shrinkage and photoreceptor reorganization with improved local sensitivity over 6 months of spontaneous recovery.

This is an AI-generated summary of the published abstract, not a clinical recommendation. It may not reflect the full text or subsequent updates — verify against the original source before acting on it.

Abstract

Purpose

To assess photoreceptor structural changes and lesion remodeling during spontaneous recovery of laser-induced retinopathy (LIR), and to evaluate accompanying alterations in localized retinal function.

Methods

This prospective longitudinal observational study included thirteen patients (15 eyes) with LIR. Baseline and 6-month follow-up examinations included adaptive optics scanning laser ophthalmoscopy (AO-SLO), optical coherence tomography (OCT), and microperimetry. Outcome measures were AO-SLO-based lesion area and cone metrics, OCT-derived ellipsoid zone (EZ) disruption, and retinal sensitivity.

Results

LIR lesions on AO-SLO appeared as irregular localized dark areas containing scattered cones with weak reflectivity. OCT images showed focal outer retinal disruptions involving the EZ and interdigitation zones. Over 6 months, lesion area significantly decreased (97,128 ± 107,478 µm² to 27,560 ± 26,901 µm²; P = 0.031), perilesional cone density increased (27,942 ± 6970 to 36,700 ± 9257 cones/mm²; P = 0.010), and cone spacing decreased (4.71 ± 0.57 µm to 4.25 ± 0.57 µm; P = 0.040). EZ disruption length remained stable (203 ± 181 µm to 195 ± 173 µm; P = 0.64). Lesion-specific retinal sensitivity improved significantly (19.25 ± 4.37 dB to 26.43 ± 1.56 dB; P < 0.001), whereas mean macular sensitivity and best-corrected visual acuity showed no significant change.

Conclusions

AO-SLO revealed lesion contraction and perilesional cone reorganization during spontaneous recovery from LIR. These findings suggest that the human retina shows microstructural plasticity after laser injury and highlight AO-SLO's superiority in detecting early cellular-level changes in LIR.

DOI

10.1016/j.apjo.2026.100325

PMID

42049112

Research metadata (titles, abstracts, authors, publication dates) is sourced from Europe PMC, which aggregates content from PubMed/MEDLINE, PubMed Central, and other providers under the U.S. National Library of Medicine (NLM/NCBI). NLM does not claim copyright on abstracts; the original journal publishers or authors may hold rights to the full articles. AI-generated summaries are derived only from the abstract, never the full text, and are always labeled as AI-generated.

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