Oman Eye Study 2005: validity of screening tests used in the glaucoma survey.
We carried out a validity assessment study for glaucoma screening procedures used during the survey conducted in Oman in 2005 on 6644 eyes in 3324 people > or = 30 years. Ocular pressure and fundus changes were the screening parameters used: glaucoma was found in 433 eyes. Sensitivity for ocular pressure was 49.7% and specificity 95.6%. For optic disc changes, sensitivity was 48.4% and specificity 97.9%. Combining both through parallel testing, sensitivity improved to 67.3% and specificity to 96.5%. An eye may, thus, be declared as not having glaucoma, but cannot be labelled as having glaucoma, using these parameters.
Khandekar
R
R
Ministry of Health, Oman. rajshpp@omantel.net.om
Al Raisi
A
A
D003430:Cross-Sectional Studies; D005901:Glaucoma / Q000175:diagnosis* / Q000453:epidemiology; D006306:Health Surveys; D006801:Humans; D007429:Intraocular Pressure; D009850:Oman / Q000453:epidemiology; D009887:Ophthalmoscopy / Q000379:methods / Q000592:standards; D011159:Population Surveillance; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity; D014065:Tonometry, Ocular / Q000379:methods / Q000592:standards; D015351:Vision Screening / Q000379:methods / Q000592:standards