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Pupillometry in Chagas disease

Overview of attention for article published in Arquivos Brasileiros de Oftalmologia, January 2018
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About this Attention Score

  • Above-average Attention Score compared to outputs of the same age (57th percentile)

Mentioned by

4 tweeters


3 Dimensions

Readers on

16 Mendeley
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Pupillometry in Chagas disease
Published in
Arquivos Brasileiros de Oftalmologia, January 2018
DOI 10.5935/0004-2749.20180041
Pubmed ID

Diva Vargas, Cleudson Castro


We investigated parasympathetic innervation abnormalities of the iris sphincter and ciliary muscles in chronic Chagas disease by measuring pupillary diameter and intraocular pressure. A group of 80 patients with Chagas disease was compared with 76 healthy individuals without chagasic infection. The following procedures were performed: pupillometry, hypersensitivity test to pilocarpine 0.125%, intraocular pressure measurement (IOP), basal pupil diameter (BPD), absolute pupillary constriction amplitude (ACA), relative pupillary constriction amplitude (RCA) and the presence of anisocoria. The prevalence of anisocoria was higher in chagasic patients (p<0.01). These patients had mean basal pupillary diameter, mean photopic pupillary diameter and mean value of absolute pupillary constriction amplitude significantly lower than non-chagasic ones (p<0.01, mean difference -0.50mm), (p=0.02, mean difference -0.20mm), (p<0.01, mean difference -0.29mm), respectively. The relative pupillary constriction amplitude did not differ between the two groups (p=0.39, mean difference -1.15%). There was hypersensitivity to dilute pilocarpine in 8 (10%) of the chagasic patients in the right eye and in 2 (2.5%) in the left eye and in 1 (1.25%) in both eyes. The mean value of intraocular pressure had a marginal statistical significance between the two groups (p=0.06, mean difference -0.91mmHg). Patients with chagasic infection may exhibit ocular parasympathetic dysfunction, demonstrable by pupillometry and the dilute pilocarpine hypersensitivity test.

Twitter Demographics

The data shown below were collected from the profiles of 4 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 16 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 16 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 6 38%
Student > Ph. D. Student 2 13%
Other 1 6%
Student > Master 1 6%
Unknown 6 38%
Readers by discipline Count As %
Medicine and Dentistry 3 19%
Biochemistry, Genetics and Molecular Biology 2 13%
Agricultural and Biological Sciences 2 13%
Social Sciences 2 13%
Nursing and Health Professions 1 6%
Other 1 6%
Unknown 5 31%

Attention Score in Context

This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 20 October 2018.
All research outputs
of 15,606,502 outputs
Outputs from Arquivos Brasileiros de Oftalmologia
of 263 outputs
Outputs of similar age
of 277,171 outputs
Outputs of similar age from Arquivos Brasileiros de Oftalmologia
of 1 outputs
Altmetric has tracked 15,606,502 research outputs across all sources so far. This one is in the 47th percentile – i.e., 47% of other outputs scored the same or lower than it.
So far Altmetric has tracked 263 research outputs from this source. They receive a mean Attention Score of 2.0. This one has done well, scoring higher than 78% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 277,171 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 57% of its contemporaries.
We're also able to compare this research output to 1 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them