Evidence map›Paper›PMID 27492731›Full record

ArticleInternational ophthalmology2017

Retina ganglion cell/inner plexiform layer and peripapillary nerve fiber layer thickness in patients with acromegaly.

Muhammed Şahin, Alparslan Şahin, Faruk Kılınç, Harun Yüksel, Zeynep Gürsel Özkurt, Fatih Mehmet Türkcü, Zafer Pekkolay, Hikmet Soylu, İhsan Çaça

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In one paragraph

Article in International ophthalmology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 2 pooled it
0.2field-weighted citation impact, top 34% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 2 syntheses or guidelines pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. 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

9 authors at 2 institutions in 1 country.

Muhammed ŞahinDepartment of Ophthalmology, School of Medicine, Dicle University, Diyarbakir, Turkey. drmuhammedsahin@gmail.com.
Alparslan ŞahinDepartment of Ophthalmology, School of Medicine, Dicle University, Diyarbakir, Turkey.
Faruk KılınçDepartment of Internal Medicine, Elazığ Training and Research Hospital, Elazıg, Turkey.
Harun YükselDepartment of Ophthalmology, School of Medicine, Dicle University, Diyarbakir, Turkey.
Zeynep Gürsel ÖzkurtDepartment of Ophthalmology, School of Medicine, Dicle University, Diyarbakir, Turkey.
Fatih Mehmet TürkcüDepartment of Ophthalmology, School of Medicine, Dicle University, Diyarbakir, Turkey.
Zafer PekkolayDepartment of Internal Medicine, School of Medicine, Dicle University, Diyarbakir, Turkey.
Hikmet SoyluDepartment of Internal Medicine, School of Medicine, Dicle University, Diyarbakir, Turkey.
İhsan ÇaçaDepartment of Ophthalmology, School of Medicine, Dicle University, Diyarbakir, Turkey.
Dicle University · TRElazığ Eğitim ve Araştırma Hastanesi · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Increased secretion of growth hormone and insulin-like growth factor-1 in acromegaly has various effects on multiple organs. However, the ocular effects of acromegaly have yet to be investigated in detail. The aim of the present study was to compare retina ganglion cell/inner plexiform layer (GCIPL) and peripapillary nerve fiber layer thickness (pRNFL) between patients with acromegaly and healthy control subjects using spectral domain optical coherence tomography (SD-OCT). This cross-sectional, comparative study included 18 patients with acromegaly and 20 control subjects. All participants underwent SD-OCT to measure pRNFL (in the seven peripapillary areas), GCIPL (in the nine ETDRS areas), and central macular thickness (CMT). Visual field (VF) examinations were performed using a Humphrey field analyzer in acromegalic patients. Measurements were compared between patients with acromegaly and control subjects. A total of 33 eyes of 18 patients with acromegaly and 40 eyes of 20 control subjects met the inclusion criteria of the present study. The overall calculated average pRNFL thickness was significantly lower in patients with acromegaly than in control subjects (P = 0.01), with pRNFL thickness significantly lower in the temporal superior and temporal inferior quadrants. Contrary to our expectations, pRNFL thickness in the nasal quadrant was similar between acromegalic and control subjects. The mean overall pRNFL thickness and superonasal, nasal, inferonasal, and inferotemporal quadrant pRNFL thicknesses were found to correlate with the mean deviation (MD) according to Spearman's correlation. However, other quadrants were not correlated with VF sensitivity. No significant difference in CMT values was observed (P = 0.6). GCIPL thickness was significantly lower in all quadrants of the inner and outer macula, except for central and inferior outer quadrants, in the acromegaly group than that in the control group (P < 0.05). GCIPL thicknesses of the inferior inner and outer macula quadrants were found to correlate with MD, whereas no correlation was observed between other quadrants and VF sensitivity. We demonstrated that GCIPL thickness decreased in patients with acromegaly compared with that in control subjects. However, the nasal quadrant pRNFL thickness was similar in acromegaly, in contrast to our expectations. SD-OCT may have utility in the assessment of the effects of acromegaly on retinal structures.

Indexed as

Visual FieldsAcromegalyAdultCross-Sectional StudiesFemaleFollow-Up StudiesHumansMaleNerve FibersOptic DiskRetinal DiseasesRetinal Ganglion CellsRetrospective StudiesTomography, Optical CoherenceAcromegalyCentral macular thicknessMacular ganglion cell layer/inner plexiform layerPeripapillary retinal nerve fiber layer

Identifiers

PMID27492731
OpenAlexW2488446104

What OpenQuestion holds

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Read underepoch 390

Registered trials

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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.