[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.
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