FACT contrast sensitivity as a diagnostic tool in glaucoma

Onal, Sumru; Yenice, Özlem; Cakir, Sezen; Temel, Ayla Bayık

doi:10.1007/s10792-007-9169-z

Cited by 42 publications

(44 citation statements)

References 25 publications

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“…Although visual acuity was good, the CS of the eyes with glaucoma was significantly less than among healthy subjects except at 1.5 cpd (p<0.012). This result was compatible with that previously reported by Onal et al (7) using the FACT wall chart. The authors suggested that the FACT chart was useful for early diagnosis of patients with glaucoma, accompanied by a short-wavelength automated perimetry.…”

Section: Discussionsupporting

confidence: 94%

“…CS is an important part of functional vision that is related to many activities of daily living and measuring it is one of the best ways to assess vision quality (3)(4)(5) . Despite having normal visual acuity measured by a Snellen chart, the satisfaction with the results of refractive surgery may vary relative to CS, and some eye diseases cause isolated loss of CS (4,(6)(7)(8) . Snellen acuity tests have a limited ability to detect fine changes in contrast because high contrast letters (black on white) are used (9) .…”

Section: Introductionmentioning

confidence: 99%

“…Also, recent advances in knowledge about refractive surgery, optical tissues, and glaucoma and macular diseases revealed that the Snellen acuity test is inadequate for early detection of eye diseases and measurement of functional vision (6,(10)(11)(12) . CS decreases in all stages of glaucoma and age-related macular degeneration (AMD) have been documented using different testing methods (7,(12)(13)(14)(15) . Glaucoma, cataract, and AMD patients suffer from pro blems in vision-related activities of daily living and the inability to recognize targets in real world, which can be better identified by CS tests than by visual acuity tests (14,(16)(17)(18) .…”

Section: Introductionmentioning

confidence: 99%

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Repeatability of contrast sensitivity testing in patients with age-related macular degeneration, glaucoma, and cataract

Kara¹,

Gencer²,

Erşan³

et al. 2016

Arquivos Brasileiros De Oftalmologia

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Approved by the following research ethics committee: Canakkale Onsekiz Mart University (#050. 99-151). ABSTRACTPurpose: To analyze the intrasession and intersession repeatability of contrast sensitivity (CS) measurements in patients with glaucoma, cataract, or age-related macular degeneration (AMD) and healthy controls. Methods: CS measurements were performed using the OPTEC-Functional Vision Analyzer (FVA), which uses a standardized and closed (view-in) system. Measurements for patients with glaucoma, cataract, or AMD and healthy controls were repeated within 30 minutes (intrasession) and during two sessions (intersession), separated by one week to one month. Test-retest reliability and correlation were measured using the intraclass correlation coefficient (ICC) and coefficient of repeatability (COR). Results: Ninety subjects (90 eyes) with visual acuity of 0.17 logMAR or higher in the cataract group or 0.00 logMAR in the other groups were included. During the first session, the ICC values were 0.87, 0.90, 0.76, and 0.69, and COR values were 0.24, 0.20, 0.38, and 0.25 for the control, glaucoma, cataract, and AMD groups, respectively. The reliability scores significantly improved during the second session, except in the glaucoma group. There was an acceptable floor effect and no ceiling effect at higher frequencies in the glaucoma and AMD groups. Conclusion: In subjects with good visual acuity, the FVA system is useful for evaluating CS and demonstrates good repeatability, as shown by ICC and COR. Because there is no ceiling effect, this system is beneficial for evaluation of early changes in CS, particularly in patients with glaucoma or AMD.Keywords: Macular degeneration; Contrast sensitivity; Glaucoma; Age effect; Repro ducibility of results , glaucoma, catarata e AMD foram, respectivamente, ICC 0,87; 0,90; 0,76; 0,69, e COR 0,24; 0,20; 0,38; 0,25 RESUMO Objetivo: Analisar a reprodutibilidade intrassessão e intersessão das medidas de sen sibilidade ao contraste (CS) em pacientes com degeneração macular relacionada à idade (AMD), glaucoma e catarata. Método: As medidas de CS foram feitas pelo OPTEC-Funcional Visão Analyzer (FVA), que utiliza um sistema padronizado e fechado de avaliação da acuidade visual. Medidas em pacientes com AMD, glaucoma, catarata e nos controles saudáveis foram repetidas no prazo de 30 minutos (intrassessão) em duas visitas (intersessão), separadas por uma semana a um mês. A confiabilidade e correlação teste-reteste foram calculados por meio do coeficiente de correlação intraclasse (ICC) e coeficiente de reprodutibilidade (COR). Resultados: Noventa olhos de 90 indivíduos foram recrutados com acuidade visual de 0,17 logMAR ou melhor em catarata e 0,00 logMAR nos outros grupos. A confiabilidade da CS na primeira visita dos grupos normal

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Section: Discussionsupporting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Repeatability of contrast sensitivity testing in patients with age-related macular degeneration, glaucoma, and cataract

Kara¹,

Gencer²,

Erşan³

et al. 2016

Arquivos Brasileiros De Oftalmologia

View full text Add to dashboard Cite

show abstract

“…38 A recent study has been conducted to investigate spatial-contrast sensitivity (CS) assessment as a tool for diagnosis of early glaucoma in patients with good visual acuity. 38 It was found that both the presence of a significant difference between the CS of glaucoma patients and control subjects and a high specificity of contrast sensitivity suggests that the FACT test may be used as a tool for diagnosis of patients with glaucoma, besides other methods such as short-wavelength automated perimetry (SWAP). 38 …”

Section: A E Omoti and Associates Diagnosis Of Primary Open Angle Gmentioning

confidence: 99%

“…38 It was found that both the presence of a significant difference between the CS of glaucoma patients and control subjects and a high specificity of contrast sensitivity suggests that the FACT test may be used as a tool for diagnosis of patients with glaucoma, besides other methods such as short-wavelength automated perimetry (SWAP). 38 …”

Section: A E Omoti and Associates Diagnosis Of Primary Open Angle Gmentioning

confidence: 99%