|تاریخ چاپ: 1399/04/20|
|Quantity and quality of vision using tinted filters in patients with low vision due to diabetic retinopathy|
|Author(s):||Naser Sadeghpour، Ali Agha Alishiri، Reza Ajudani، Mohammad Hossein Khosravi، Mohammad Aghazadeh Amiri، Omid Sadeghpour|
PurposeTo investigate the effect of tinted filters on visual acuity (VA), contrast sensitivity and patient satisfaction in diabetic retinopathy associated with low vision.
MethodsIn a prospective study, 51 patients with diabetic retinopathy and low vision were assessed. We chose a simple random sampling method and used the patients 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.
ResultsA 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
ConclusionTinted 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.
|Keywords:||Contrast Sensitivity، Diabetic Retinopathy، Low Vision، Tinted Filters|
|Published:||Journal of Ophthalmic & Vision Research, Volume:10 Issue: 4, 2016|
|Full text:||PDF is available on the website.|