Macular Function and the Photostress Test 1

Severin, Sanford L.; Tour, Robert L.; Kershaw, R. H.

doi:10.1001/archopht.1967.00980020004002

Cited by 57 publications

(14 citation statements)

References 7 publications

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“…For controls, the effect of eye (right / left) in PSRT was not significant but age, in agreement with previous studies 2,16,19 , had the effect of delaying the PSRT and appears to occur due to a gradual deterioration of macular function with increasing age. 19 People with diabetes, in class A (control and diabetic groups), had faster PSRT than controls.…”

Section: Discussionsupporting

confidence: 91%

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The macular photostress test in diabetes, glaucoma, and cataract

Baptista

Sousa²,

Rocha³

et al. 2013

SPIE Proceedings

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Purpose. The photostress recovery time test (PSRT) has been widely reported as a helpful screening clinical tool. However, the poor standardization of its measurement technique remains to be a limitation among clinicians. The purpose of this study is to apply a recommended clinical technique to measure the PSRT in some of the most commons eye diseases to ascertain whether these diseases affect the PSRT values.Methods. One hundred and one controls and 105 patients, with diagnosed diabetes (without visible signs of diabetic retinopathy), primary open angle glaucoma (POAG) or cataracts underwent photostress testing. The test was performed with a direct ophthalmoscope for illuminating the macula for 30 seconds. Participants belonged to three age classes: A, B and C; and were divided into four groups: control, diabetic, POAG and cataract. The age range for A, B and C classes were respectively 43-54, 55-64 and 65-74 years. The groups were also further compared within each age class. In addition, the influence of age on PSRT was evaluated using the control group.Results. Results demonstrate that PSRT changes with age (p<0.02). In class A, diabetic group had a faster PSRT than control group, (mean ± standard deviation) 20.22±7.51 and 26.14±8.34 seconds. The difference between these groups was statistical significant (t-test, p=0.012). Cataract and POAG groups did not affect the PSRT significantly.Conclusions. The technique used for the Photostress showed that diabetics, younger than 54 years, may have faster PSRT and that, aging delays PSRT.

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Section: Discussionsupporting

confidence: 91%

“…19 People with diabetes, in class A (control and diabetic groups), had faster PSRT than controls. However, diabetic group had similar PSRT to that of other groups for classes B (control, diabetic and POAG groups) and C (control, diabetic and cataract groups).…”

Section: Discussionmentioning

confidence: 97%

The macular photostress test in diabetes, glaucoma, and cataract

Baptista

Sousa²,

Rocha³

et al. 2013

SPIE Proceedings

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show abstract

“…It can detect subtle macular changes [9]. This test in the revolutionized form as the MAPT has been shown to be more useful and objective [6].…”

Section: Discussionmentioning

confidence: 99%

“…Lenticular opacities causing ocular aberrations and macular degeneration markedly prolong recovery times [9,16]. The smokers and nonsmokers included in the study were adults having no ocular and systemic disease except refractive errors within 3 dpt of spherical equivalent.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Chronic Smoking on the Pupil and Photostress Recovery Time

et al. 2012

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Purpose: To determine the effect of chronic smoking on the pupil and photostress recovery time. Methods: Macular adaptation to photostress condition, and mesopic and photopic pupillary responses were measured using automated perimetry (Humprey®), and an OPD device (Nidek), respectively. Forty heavy smokers (smoking ≥1 box/day for the past 5 years at least), and 40 age- and sex-matched nonsmokers were enrolled. All the subjects had full vision and no ocular problems. Results: The baseline foveal threshold value (FTV) before photostress was similar in both groups (p = 0.75). Although photostress recovery times (7.1 ± 1.1 and 7.4 ± 1.3 min) were similar in smokers and nonsmokers (p = 0.30), FTV measured at the first minute after photostress was statistically higher in smokers (36.05 ± 0.98 dB) than nonsmokers (34.7 ± 1.03 dB; p = 0.018). Scotopic pupil sizes in smokers (6.73 ± 0.82 mm) and nonsmokers (6.55 ± 0.62 mm) were similar (p = 0.28); however, photopic pupil size in smokers (5.36 ± 0.73 mm) was different from nonsmokers (4.73 ± 0.58 mm; p = 0.001). Conclusions: Chronic smoking may dilate the pupil, and increases macular FTV immediately after photostress.

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“…40,49,63,70,73,106 When the normal macula is exposed to an intense light source for a specified time, it will recover a defined level of function in a known time. Any deviation from normal retinal function will manifest as a prolonged recovery time.…”

Section: Glare Recoverymentioning

confidence: 99%

Assessment of age‐related maculopathy using subjective vision tests

Lovie‐Kitchin

Feigl

2005

Clinical and Experimental Optometry

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This paper reviews non-standard, clinical vision tests that may be used to detect the earliest visual loss in age-related maculopathy (ARM), before fundus changes are detected. We recommend a clinical test battery for all patients aged 60 years and older, comprising low luminance/low contrast (SKILL) VA or low contrast VA, desaturated D-15 colour vision assessment, flicker perimetry, glare recovery and dark adaptation if possible, together with conventional assessments of case history, ophthalmoscopy and high contrast visual acuity (VA) for the detection and diagnosis of ARM. Reading rate is also discussed as a potential indicator of early visual loss. For monitoring the progressive visual loss in age-related macular degeneration (AMD) and determining the requirements for optometric vision rehabilitation, we recommend more conventional clinical vision tests of distance and near visual acuity, reading rate, the effects of varying illumination and a functional central visual field assessment.

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Macular Function and the Photostress Test 1

Cited by 57 publications

References 7 publications

The macular photostress test in diabetes, glaucoma, and cataract

The macular photostress test in diabetes, glaucoma, and cataract

The Effect of Chronic Smoking on the Pupil and Photostress Recovery Time

Assessment of age‐related maculopathy using subjective vision tests

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