Evidence map›Paper›PMID 29789897›Full record

ArticleDer Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft2019

[Pilot study to investigate sleep disorders in the blind and persons with relevant visual impairment].

C Dirks, D Grünewald, P Young, A Heidbreder

Registry-linked trialAbstract read
PubMed Publisher
In one paragraph

Article in Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06631807 (The Impact of the Years of Blindness on Sleep and Dreaming Processes and Possible Relationships With Spatial Abilities), which is not on this map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 26% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT06631807 enrolling by invitationnot on this mapstarted 2024, after this paper: background citation

The Impact of the Years of Blindness on Sleep and Dreaming Processes and Possible Relationships With Spatial Abilities

TypeobservationalSponsorIstituto Italiano di TecnologiaRan2024 to 2025Enrolled40ConditionsBlindness, Visual Impairment
3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 1 synthesis or guideline pooled it, 5 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. The vision of dreams: from ontogeny to dream engineering in blindness.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2022
    Review
  4. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

C DirksInstitut für Schlafmedizin und neuromuskuläre Erkrankungen, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, Gebäude A1, 48149, Münster, Deutschland.
D GrünewaldInstitut für Schlafmedizin und neuromuskuläre Erkrankungen, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, Gebäude A1, 48149, Münster, Deutschland.
P YoungInstitut für Schlafmedizin und neuromuskuläre Erkrankungen, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, Gebäude A1, 48149, Münster, Deutschland.
A HeidbrederInstitut für Schlafmedizin und neuromuskuläre Erkrankungen, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, Gebäude A1, 48149, Münster, Deutschland. anna.heidbreder@ukmuenster.de.
University Hospital Münster · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSleep disorders are associated with serious health problems in blind and visually impaired persons. Loss of light perception may result in a shift of sleep-wake pattern, which may lead to significant impairments in daily life--the so-called non-24-hour sleep-wake disorder. To date, epidemiologic data on non-24 only exist for the USA. This pilot study was conducted to provide first epidemiologic data for the prevalence of non-24 and other sleep disorders among blind and visually impaired persons in Germany.

methodsRecruited were 111 blind and visually impaired subjects (36 subjects without light perception; male [m] = 56, 27-85 years, average [Mx] = 59.53, standard deviation [SD] = 14.69) and 111 sighted controls (m = 41, 27-88 years, Mx = 58.32, SD = 14.21), who answered a set of validated questionnaires referring to general health status (SF-36), sleep characteristics (PSQI), and daytime sleepiness (ESS). In addition, a questionnaire to predict non-24-hour sleep-wake disorder, which is not yet validated in German, was provided.

resultsThe prevalence of 72.2% for the non-24-hour sleep-wake disorder in blind people is in accordance with results from the USA. In contrast, our results indicated non-24 in only 21.3% of the subjects with residual light perception. Furthermore, other sleep disorders like problems falling asleep (100% vs. 79.9%), maintaining sleep (90% vs. 88.1%), sleep-disordered breathing (19.4% vs. 32%), or sleep-related movement disorders (28.1% vs. 32.9%) were also common in the group of blind or visually impaired persons. DISCUSSION: The non-24-hour sleep-wake disorder is a frequent problem among people with no light perception, associated with problems falling asleep, maintaining sleep, and daytime sleepiness. The perception of light as an external cue for our circadian rhythm plays a key role. However, sleep disruption is not fully explained by non-24, making a detailed sleep history essential.

Indexed as

Persons with Visual DisabilitiesSleep Wake DisordersAdultAgedAged, 80 and overBlindnessFemaleGermanyHumansMaleMiddle AgedPilot ProjectsBlindnessNon-24-hour sleep–wake disorderSleep wake disordersVision disorders

Identifiers

PMID29789897
OpenAlexW2804693846

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.