Skip to main content
padlock icon - secure page this page is secure

Free Content Contrast sensitivity and visual recovery time in diabetic patients treated with panretinal photocoagulation

Download Article:
 Download
(PDF 76.6 kb)
 
ABSTRACT.Purpose:

To study patients treated with panretinal photocoagulation regarding contrast sensitivity and visual recovery time after exposure to glare.

Methods:

To compare contrast sensitivity and visual recovery-time after exposure to glare in eyes (n=20) from 20 type 1 diabetic patients treated with panretinal photocoagulation for proliferative retinopathy with eyes (n=19) from 19 un-treated type 1 diabetic patients. Contrast sensitivity was tested with a low contrast acuity chart, before and during exposure to either a uniform background illumination or a spotlight. Visual recovery time was defined as the time required to regain baseline visual acuity during light exposure.

Results:

Contrast thresholds values were higher in eyes treated with panretinal photocoagulation compared to un-treated eyes before illumination 4.2±1.2% vs. 3.1±1.7% (p=0.006), during background illumination 5.8±5.1% vs. 3.9±4.8% (p=0.001), and during spotlight exposure 5.6±2.2% vs. 3.2±1.8% (p<0.001). Furthermore, recovery time was longer both during background illumination, 20; 5–50 sec vs. 2; 2–80 sec. (md;range), (p<0.001) and during spotlight illumination 27; 5–70 sec vs. 2;1–60 sec. (md;range) (p<0.001).

Conclusion:

Eyes treated with panretinal photocoagulation had higher contrast threshold levels at baseline and during glare, as well as a prolonged visual recovery time compared to un-treated eyes with mild background retinopathy.

No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Keywords: contrast sensitivity; diabetes; glare; panretinal photocoagulation; visual recovery time

Document Type: Original Article

Affiliations: 1: Department of Ophthalmology, University Hospital, Lund, Department of Physics, Lund 2: , Sweden

Publication date: December 1, 2000

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more