Contrast Sensitivity in Early Glaucoma: Effects of Lighting Level and Eccentricity.

Tripolone, Ma. Constanza; Issolio, Luis Alberto; Silva, B.; Filgueira, Clemente Paz; Romero, Daniel; Barrionuevo, Pablo Alejandro

doi:10.31527/analesafa.2018.invisiont.62

Cited by 1 publication

(4 citation statements)

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“…824 ). As in our previous study (Tripolone et al, 2018), foveal CS was found reduced in early POAG patients compared to control group for both age ranges (Under 50 y.o. : F (1, 81) = 11 .…”

Section: Resultssupporting

confidence: 84%

“…However, the difference was not statistically significant for patients under 50 years of age (F (1, 28) = 0.05; p = 0.824). As in our previous study (Tripolone et al, 2018) These results suggest that foveal CS allows differentiating groups between early POAG from those with suspected POAG when the participants are over 50 years of age. For younger participants, our results show that CS in our POAG-suspect group was as diminished as for early POAG group.…”

Section: Foveal Cs In Early and Suspected Poag Groupssupporting

confidence: 88%

“…Foveal and peripheral CS were measured at a spatial frequency of 4 cycles/degree (c/d). This spatial frequency was selected from a previous work (Tripolone et al, 2018), in which at photopic level foveal CS was determined for spatial frequencies of 4 c/d and 8 c/d while at mesopic level foveal and extrafoveal CS was determined for 4 c/d and 2 c/d, respectively. Therefore, 4 c/d was found to be more adequate for evaluating photopic and mesopic CS than 8 c/d and 2 c/d, respectively.…”

Section: Measurement Conditionsmentioning

confidence: 99%

“…; VA range = 4/10 -10/10; MD range = -9.54 -4.4 dB; IOP range = 10 -22 mmHg; CDR range = 0.3 -0.8. Partial results of this cohort (17 patients) were previously reported (Tripolone et al, 2018). Such as for POAG suspects, Early POAG patients were grouped by age range.…”

Section: Experiments 2: Comparison With Early Poag Patientsmentioning

confidence: 99%

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Contrast Sensitivity Is Impaired in Suspected Primary Open-Angle Glaucoma Patients

Tripolone,

Issolio,

Perez

et al. 2024

Preprint

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Purpose To assess contrast sensitivity (CS) for detecting visual changes in suspected POAG patients. Methods CS was measured foveally at photopic conditions and peripherally at mesopic conditions using sinusoidal gratings of 4 cycles/degree. In experiment 1, foveal and peripheral CS were assessed in suspected POAG patients and age-matched healthy control subjects. In experiment 2, foveal CS was assessed in early POAG patients age-matched with suspected POAG group. Analysis was done considering two age ranges (Under and Over 50 years of age). Correlations between CS and clinical parameters were evaluated. Results Peripheral CS was decreased only for older POAG suspect patients from the control group (Over 50: p = 0.008. Under 50: p = 0.566). Foveal CS was reduced in POAG suspect participants for both age ranges (Over 50: p = 0.028. Under 50: p < 0.001) and in early POAG patients (Under 50: p = 0.001; Over 50: p < 0.001), both compared to the control group. Foveal CS was lower in early POAG compared to POAG suspect for older patients (Over 50: p = 0.019. Under 50: p = 0.824). Foveal CS was correlated with cup-disc ratio in early POAG patients (Early: p < 0.001. Suspect: p = 0.766) and with age in both patient groups (Early: p = 0.001. Suspect: p = 0.002). Conclusion CS is affected in patients with a high risk of developing POAG and recently diagnosed. Our results suggest that CS could serve as a screening tool, detecting early damage even before structural changes occur.

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“…824 ). As in our previous study (Tripolone et al, 2018), foveal CS was found reduced in early POAG patients compared to control group for both age ranges (Under 50 y.o. : F (1, 81) = 11 .…”

Section: Resultssupporting

confidence: 84%

Section: Foveal Cs In Early and Suspected Poag Groupssupporting

confidence: 88%

Section: Measurement Conditionsmentioning

confidence: 99%

Section: Experiments 2: Comparison With Early Poag Patientsmentioning

confidence: 99%

See 2 more Smart Citations

Contrast Sensitivity Is Impaired in Suspected Primary Open-Angle Glaucoma Patients

Tripolone,

Issolio,

Perez

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

Contrast Sensitivity in Early Glaucoma: Effects of Lighting Level and Eccentricity.

Cited by 1 publication

References 0 publications

Contrast Sensitivity Is Impaired in Suspected Primary Open-Angle Glaucoma Patients

Contrast Sensitivity Is Impaired in Suspected Primary Open-Angle Glaucoma Patients

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