Localised relative scotoma in cuticular drusen

Author:

Charng JasonORCID,Balaratnasingam ChandrakumarORCID,Attia Mary S.ORCID,Heath Jeffery Rachael C.ORCID,Chen Fred K.ORCID

Abstract

Abstract Purpose To investigate retinal sensitivity changes in eyes with pure cuticular drusen. Methods Multimodal imaging and microperimetry (37-loci grid) data were examined retrospectively to evaluate functional changes in eyes with pure cuticular drusen. Mean sensitivity in the cuticular drusen cohort was compared to age-matched normals. An age- and loci-specific normative reference was created to analyse localised sensitivity deviation. Results The mean number loci with relative scotoma in the cuticular drusen cohort (n = 27, mean [SD] age: 48.5 [12.4] years) referenced to normal eyes (n = 80, 53.5 [14.6] years) was 5.5 (95% confidence interval 3.0 to 8.1). However, mean sensitivity was not statistically different to the age-matched normal cohort (95% CI, − 2.3 to + 3.4 dB). The 37-loci grid was stratified into three rings of the approximately same number of loci, and the percentage of cuticular drusen eyes with pointwise deviation was significantly lower in the inner compared to the middle ring (12.3 [5.3]% vs. 17.3 [5.1]%, p < 0.05). Conclusions Eyes with cuticular drusen demonstrated relative scotoma, but mean sensitivity was not affected. Pointwise sensitivity provides a more robust measure of retinal sensitivity than mean sensitivity in cuticular drusen and should be assessed both in the clinic and in future clinical trials.

Funder

National Health and Medical Research Council

University of Western Australia

Publisher

Springer Science and Business Media LLC

Subject

Cellular and Molecular Neuroscience,Sensory Systems,Ophthalmology

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