Short wavelength automated perimetry can detect visual field changes in diabetic patients without retinopathy.

Abstract:

PURPOSE:The purpose of the following study is to compare short wave automated perimetry (SWAP) versus standard automated perimetry (SAP) for early detection of diabetic retinopathy (DR). MATERIALS AND METHODS:A total of 40 diabetic patients, divided into group I without DR (20 patients = 40 eyes) and group II with mild non-proliferative DR (20 patients = 40 eyes) were included. They were tested with central 24-2 threshold test with both shortwave and SAP to compare sensitivity values and local visual field indices in both of them. A total of 20 healthy age and gender matched subjects were assessed as a control group. RESULTS:Control group showed no differences between SWAP and SAP regarding mean deviation (MD), corrected pattern standard deviation (CPSD) or short fluctuations (SF). In group I, MD showed significant more deflection in SWAP (-4.44 ± 2.02 dB) compared to SAP (-0.96 ± 1.81 dB) (P = 0.000002). However, CPSD and SF were not different between SWAP and SAP. In group II, MD and SF showed significantly different values in SWAP (-5.75 ± 3.11 dB and 2.0 ± 0.95) compared to SAP (-3.91 ± 2.87 dB and 2.86 ± 1.23) (P = 0.01 and 0.006 respectively). There are no differences regarding CPSD between SWAP and SAP. The SWAP technique was significantly more sensitive than SAP in patients without retinopathy (p), but no difference exists between the two techniques in patients with non-proliferative DR. CONCLUSION:The SWAP technique has a higher yield and efficacy to pick up abnormal findings in diabetic patients without overt retinopathy rather than patients with clinical retinopathy.

journal_name

Indian J Ophthalmol

authors

Zico OA,El-Shazly AA,Abdel-Hamid Ahmed EE

doi

10.4103/0301-4738.126986

subject

Has Abstract

pub_date

2014-04-01 00:00:00

pages

383-7

issue

4

eissn

0301-4738

issn

1998-3689

pii

IndianJOphthalmol_2014_62_4_383_126986

journal_volume

62

pub_type

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