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Updated: May 28, 2026

In Vivo Vascular Injury Readouts in Mouse Retina to Promote Reproducibility

In Vivo Vascular Injury Readouts in Mouse Retina to Promote Reproducibility

Published on: April 21, 2022

Retinal haemorrhage description tool.

Anamika Tandon¹, Susan McIntyre, Anna Yu

¹Department of Ophthalmology and Visual Sciences, Toronto, Canada.

The British Journal of Ophthalmology

|October 11, 2011

Summary

This summary is machine-generated.

A new tool for describing retinal hemorrhages in children with head trauma shows good reliability in the posterior retina but less consistency in peripheral zones. This highlights the importance of clinical examination for accurate diagnosis.

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Last Updated: May 28, 2026

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Retinal Pathophysiological Evaluation in a Rat Model

Retinal Pathophysiological Evaluation in a Rat Model

Published on: May 6, 2022

Area of Science:

Ophthalmology
Pediatric Traumatology
Medical Imaging

Background:

Retinal hemorrhages are critical indicators in pediatric head trauma cases.
Current methods lack standardized, validated protocols for consistent description.
Accurate documentation is crucial for differentiating abusive from accidental injuries.

Purpose of the Study:

To establish the reliability and validity of a novel web-based tool for describing retinal hemorrhages.
To assess the consistency of a new descriptive protocol in pediatric head trauma evaluations.
To improve the standardization of retinal hemorrhage documentation.

Main Methods:

A comprehensive questionnaire utilizing a four-zone retinal schematic was developed.
Four independent observers assessed 80 retinal photographs using the tool.
Inter-rater and intra-rater reliability were calculated using Fleiss kappa statistics.

Main Results:

High inter-rater agreement was observed for hemorrhages in peripapillary zones.
Fair agreement was noted for hemorrhages in all other retinal zones.
High intra-rater agreement was specific to the posterior pole; peripheral zones showed lower agreement.

Conclusions:

The developed tool demonstrates validity for describing posterior retinal hemorrhages.
The tool's performance is less reliable for peripheral retinal hemorrhages.
Photographic documentation of peripheral retinal hemorrhages may be unreliable, emphasizing clinical examination.