[en] PURPOSE: To investigate the effect of tinted filters on visual acuity (VA), contrast sensitivity and patient satisfaction in diabetic retinopathy associated with low vision.
METHODS: In a prospective study, 51 patients with diabetic retinopathy and low vision were assessed. We chose a simple random sampling method and used the patient's files for data collection. LogMAR notations were applied for assessing VA and a contrast sensitivity chart (CSV-1000) was employed for measuring contrast sensitivity. First, measurements were performed without tinted filters and then using them. Appropriate lenses were given to the patients for 2 days, and they were questioned about their satisfaction using them in different places.
RESULTS: A total of 20 male and 31 female patients with mean age of 57.3 years participated in the study. With a 527 ± 10 nm filter, mean VA improved significantly (P ≤ 0.05). Using the 527 ± 10 nm and 511 ± 10 nm filters, mean contrast sensitivity was improved significantly at 3 and 6 cycles/degree frequencies (P < 0.05). The effect of other filters on VA and contrast sensitivity was not significant. Patient satisfaction rate was generally high.
CONCLUSION: Tinted filters are able to rehabilitate low-vision patients due to diabetic retinopathy. The 527 ± 10 and 511 ± 10 nm wavelength filters improved contrast sensitivity and the 527 ± 10 nm filter improved VA to some extent. Further investigations are recommended to assess the effect of these filters in patients with other causes of low-vision.
Disciplines :
Ophthalmology
Author, co-author :
Sadeghpour, Naser; Department of Ophthalmology, School of Medicine, Baqiyatallah University of Medical Sciences, Tehran, Iran
Alishiri, Ali Agha; Department of Ophthalmology, School of Medicine, Baqiyatallah University of Medical Sciences, Tehran, Iran
Ajudani, Reza; Students' Research Committee, Baqiyatallah University of Medical Sciences, Tehran, Iran
Khosravi, Mohammad Hossein ; Université de Liège - ULiège ; Students' Research Committee, Baqiyatallah University of Medical Sciences, Tehran, Iran
Amiri, Mohammad Aghazadeh; Department of Optometry, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Sadeghpour, Omid; Students' Research Committee, Baqiyatallah University of Medical Sciences, Tehran, Iran
Language :
English
Title :
Quantity and Quality of Vision Using Tinted Filters in Patients with Low Vision Due to Diabetic Retinopathy.
Publication date :
2015
Journal title :
Journal of Ophthalmic and Vision Research
ISSN :
2008-2010
eISSN :
2008-322X
Publisher :
Wolters Kluwer Medknow Publications, United Arab Emirates
Virgili G, Acosta R, Grover LL, Bentley SA, Giacomelli G. Reading aids for adults with low vision. Cochrane Database Syst Rev 2013;10:CD003303.
Smallfield S, Clem K, Myers A. Occupational therapy interventions to improve the reading ability of older adults with low vision: A systematic review. Am J Occup Ther 2013;67:288-295.
Hakobyan L, Lumsden J, O'Sullivan D, Bartlett H. Mobile assistive technologies for the visually impaired. Surv Ophthalmol 2013;58:513-528.
Eperjesi F, Fowler CW, Evans BJ. Do tinted lenses or filters improve visual performance in low vision? A review of the literature. Ophthalmic Physiol Opt 2002;22:68-77.
Wurm LH, Legge GE, Isenberg LM, Luebker A. Color improves object recognition in normal and low vision. J Exp Psychol Hum Percept Perform 1993;19:899-911.
Afra J, Ambrosini A, Genicot R, Albert A, Schoenen J. Influence of colors on habituation of visual evoked potentials in patients with migraine with aura and in healthy volunteers. Headache 2000;40:36-40.
Rodríguez-Galietero A, Montés-Micó R, Muñoz G, Albarrán-Diego C. Blue-light filtering intraocular lens in patients with diabetes: Contrast sensitivity and chromatic discrimination. J Cataract Refract Surg 2005;31:2088-2092.
Rosenblum YZ, Zak PP, Ostrovsky MA, Smolyaninova IL, Bora EV, Dyadina UV, et al. Spectral filters in low-vision correction. Ophthalmic Physiol Opt 2000;20:335-341.
Langagergaard U, Ganer HJ, Baggesen K. Age-related macular degeneration: Filter lenses help in certain situations. Acta Ophthalmol Scand 2003;81:455-458.
Wild S, Roglic G, Green A, Sicree R, King H. Global prevalence of diabetes: Estimates for the year 2000 and projections for 2030. Diabetes Care 2004;27:1047-1053.
Pomerance GN, Evans DW. Test-retest reliability of the CSV-1000 contrast test and its relationship to glaucoma therapy. Invest Ophthalmol Vis Sci 1994;35:3357-3361.
Poynton CA. Digital Video and HDTV: Algorithms and Interfaces. Burlington, Mass: Elsevier/Morgan Kaufmann; 2003.
Leat SJ, North RV, Bryson H. Do long wavelength pass filters improve low vision performance? Ophthalmic Physiol Opt 1990;10:219-224.
Mahjoob M. The effect of color filters on the visual acuity and contrast sensitivity in low vision patients. J BUMS 2010;11:53-57.
Morrissette DL, Mehr EB, Keswick CW, Lee PN. Users' and nonusers' evaluations of the CPF 550 lenses. Am J Optom Physiol Opt 1984;61:704-710.
Nguyen T, Hoeft W. A study of blue blocker filters and related pathologies. J Vis Rehabil 1994;8:15-21.