The macular photostress test in diabetes, glaucoma, and cataract

António M. G. Baptista; Raul A. R. C. Sousa; Filomena A. S. Q. Rocha; Paula Sepúlveda Fernandes; António F. Macedo

doi:10.1117/12.2026235

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18 November 2013 The macular photostress test in diabetes, glaucoma, and cataract

António M. G. Baptista, Raul A. R. C. Sousa, Filomena A. S. Q. Rocha, Paula Sepúlveda Fernandes, António F. Macedo

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Proceedings Volume 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications; 8785FW (2013) https://doi.org/10.1117/12.2026235
Event: 8th Ibero American Optics Meeting/11th Latin American Meeting on Optics, Lasers, and Applications, 2013, Porto, Portugal

Abstract

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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António M. G. Baptista, Raul A. R. C. Sousa, Filomena A. S. Q. Rocha, Paula Sepúlveda Fernandes, and António F. Macedo "The macular photostress test in diabetes, glaucoma, and cataract", Proc. SPIE 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications, 8785FW (18 November 2013); https://doi.org/10.1117/12.2026235

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KEYWORDS

Control systems

Eye

Visualization

Macula

Statistical analysis

Retina

Laser optics

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