Assessment of visual performance in the evaluation of new medical products

Drum, Bruce; Calogero, Don; Rorer, Eva

doi:10.1016/j.ddtec.2007.10.009

Cited by 13 publications

(18 citation statements)

References 14 publications

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“…Contrast sensitivity has been recognized as a visual function outcome that is affected by various retinal and neuronal ophthalmic diseases early on the disease process. Contrast sensitivity is recognized and established as a measurement method that correlates with a patient’s ability to function, especially drive a car at night, more strongly that VA does (Drum et al. 2007).…”

Section: Resultsmentioning

confidence: 99%

“…Regulatory agencies have found such clinical tests as CS appealing to study as potential surrogate measures for driving performance. In clinical trials for new therapeutic modalities, CS may have a role as a surrogate marker given night‐driving performance is recognized as a key measure of visual function and the ability to perform under mesopic conditions (Drum et al. 2007).…”

Section: Contrast Sensitivity Evaluation Methodologiesmentioning

confidence: 99%

“…1992; Rubin & Bressler 2002). Third, CS can serve as a measurement of functional disability and visual limitations, as has been demonstrated with modest correlations to night‐driving performance testing (Drum et al. 2007).…”

Section: Potential Clinical Value Of Contrast Sensitivitymentioning

confidence: 99%

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Contrast sensitivity, ocular blood flow and their potential role in assessing ischaemic retinal disease

Shoshani¹,

Harris²,

Rusia³

et al. 2011

Acta Ophthalmologica

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ABSTRACT.Purpose: To examine the definition, evaluation methodology, association to ocular blood flow and potential clinical value of contrast sensitivity (CS) testing in clinical and research settings, focusing in patients with ischemic retinal disease. Methods: A review of the medical literature focusing on CS and ocular blood flow in ischemic retinal disease. Results: CS may be more sensitive than other methods at detecting subtle defects or improvements in primarily central retinal ganglion cell function early on in a disease process. CS testing attempts to provide spatial detection differences which are not directly assessed with standard visual acuity chart testing. Analyzing all studies that have assessed both CS change and ocular blood flow, it is apparent that both choroidal circulation and retinal circulation may have an important role in influencing CS. Conclusion: The concept that CS is directly influenced by ocular blood flow is supported by reviewing the studies involving both. Although the studies in the literature have not established a direct cause and effect relationship per se, the literature review makes it logical to assume that changes in retinal and choroidal blood flow influence CS. This raises the possibility that a subjective visual characteristic, specifically CS, may be able to be evaluated more objectively by studying blood flow. It appears appropriate to study the relationship between blood flow and CS more extensively to develop improved ways of measuring various aspects of blood flow to the eye and to best quantify early changes in visual function.

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Section: Resultsmentioning

confidence: 99%

Section: Contrast Sensitivity Evaluation Methodologiesmentioning

confidence: 99%

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Contrast sensitivity, ocular blood flow and their potential role in assessing ischaemic retinal disease

Shoshani¹,

Harris²,

Rusia³

et al. 2011

Acta Ophthalmologica

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“…Advantage of these tests is that they eliminate the needs to control the levels of room light and can be used in a small space (Table 1) (27) .…”

Section: Disability Glarementioning

confidence: 99%

Quality of vision in refractive and cataract surgery, indirect measurers: review article

Parede

Torricelli

Mukai

et al. 2013

Arq. Bras. Oftalmol.

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Visual acuity is the measurement of an individual's ability to recognize details of an object in a space. Visual function measurements in clinical ophthalmology are limited by factors such as maximum contrast and so it might not adequately reflect the real vision conditions at that moment as well as the subjective aspects of the world perception by the patient. The objective of a successful vision-restoring surgery lies not only in gaining visual acuity lines, but also in vision quality. Therefore, refractive and cataract surgeries have the responsibility of achieving quality results. It is difficult to define quality of vision by a single parameter, and the main functional-vision tests are: contrast sensitivity, disability glare, intraocular stray light and aberrometry. In the current review the different components of the visual function are explained and the several available methods to assess the vision quality are described.

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“…CS under different lighting conditions provides particularly important information about quality of vision for post-surgery populations and for presbyopia patients as they are affected by age-related changes to both crystalline lens and neural processing [2][3][4][5]. Presbyopia is the most common eye disease, naturally occurring for every person as a result of aging, currently affecting 1 billion adults worldwide [6].…”

Section: Introductionmentioning

confidence: 99%

Contrast Sensitivity in Emmetropic Presbyopes with Small-Aperture Inlay Implantation: Normative Values and Postoperative Outcomes

Li¹,

Pepose²,

Pol³

et al. 2017

J Eye Cataract Surg

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Assessment of visual performance in the evaluation of new medical products

Cited by 13 publications

References 14 publications

Contrast sensitivity, ocular blood flow and their potential role in assessing ischaemic retinal disease

Contrast sensitivity, ocular blood flow and their potential role in assessing ischaemic retinal disease

Quality of vision in refractive and cataract surgery, indirect measurers: review article

Contrast Sensitivity in Emmetropic Presbyopes with Small-Aperture Inlay Implantation: Normative Values and Postoperative Outcomes

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