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ArticleInternational ophthalmology2024

Comparison of ganglion cell layer thickness and pattern electroretinography among glaucoma suspects and healthy controls.

Jayadev Nanda, Bhawesh Ch Saha, Amit Raj, Prabhakar Singh, Prerna Sinha

Abstract readComparative Study
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Article in International ophthalmology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

5 authors.

Jayadev NandaDepartment of Ophthalmology, All India Institute of Medical Science Patna, Patna, Bihar, 801507, India.ORCID https://orcid.org/0009-0000-6011-2803
Bhawesh Ch SahaDepartment of Ophthalmology, All India Institute of Medical Science Patna, Patna, Bihar, 801507, India. drbchandra@gmail.com.ORCID https://orcid.org/0000-0002-0533-5702
Amit RajDepartment of Ophthalmology, All India Institute of Medical Science Patna, Patna, Bihar, 801507, India.ORCID https://orcid.org/0000-0001-7012-9967
Prabhakar SinghDepartment of Ophthalmology, All India Institute of Medical Science Patna, Patna, Bihar, 801507, India.ORCID https://orcid.org/0000-0003-3589-8124
Prerna SinhaDepartment of Ophthalmology, All India Institute of Medical Science Patna, Patna, Bihar, 801507, India.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the difference in ganglion cell layer (GCL) thickness on optical coherence tomography (OCT) and waveform on pattern electroretinography (PERG) among glaucoma suspects and healthy controls.

methodsAn analytical, cross-sectional study was done on 100 eyes of 50 subjects, equally divided in the glaucoma suspect and control group. Subjects with an asymmetrically increased vertical cup-to-disc ratio and without any perimetric change were taken as suspects, and subjects with normal findings were taken as controls. GCL thickness was evaluated on spectral domain OCT at 3 mm, 3.45 mm, and 6 mm centering the foveola, and P50, N95 wave forms were recorded according to the standard PERG protocol.

resultsIn this study, we observed that the average GCL thickness is significantly less in glaucoma suspects at 3.45 mm (p = 0.045) and at 6 mm (p < 0.001) circle zone. On PERG, P50 amplitude was significantly low in glaucoma suspects in comparison to controls (p = 0.007). There was significantly increased implicit time for both P50 and N95 in glaucoma suspects (p < 0.001). For N95 amplitude, a non-significant (p = 0.127) difference was observed among the two groups. At 3.45 mm, average GCL thickness showed a weak negative correlation with N95 implicit time (r = - 0.286, p = 0.044), a weak positive correlation with P50 amplitude (r = 0.349, p = 0.013), and at 6 mm, a weak positive correlation with P50 amplitude (r = 0.311, p = 0.028) in glaucoma suspects.

conclusionsAnalysing GCL thickness can help in the structural assessment of preperimetric glaucoma. PERG can be used as a valuable tool for the detection of ganglion cell dysfunction, even before cell loss.

Indexed as

ElectroretinographyIntraocular PressureOcular HypertensionRetinal Ganglion CellsTomography, Optical CoherenceAdultAgedCross-Sectional StudiesFemaleGlaucomaHumansMaleMiddle AgedNerve FibersOptic DiskVisual FieldsGCL thicknessGlaucoma suspectPERGPreperimetric glaucoma

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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.