title: Refractive errors in patients with newly diagnosed diabetes mellitus.
abstract: OBJECTIVE
  Diabetes mellitus is a complex metabolic disorder that involves the small blood vessels, often causing widespread damage to tissues, including the eyes' optic refractive error. In patients with newly diagnosed diabetes mellitus who have unstable blood glucose levels, refraction may be incorrect. We aimed to investigate refraction in patients who were recently diagnosed with diabetes and treated at our centre.
  
  
  METHODS
  This prospective study was performed from February 2013 to January 2014. Patients were diagnosed with diabetes mellitus using laboratory biochemical tests and clinical examination. Venous fasting plasma glucose (fpg) levels were measured along with refractive errors. Two measurements were taken: initially and after four weeks. The last difference between the initial and end refractive measurements were evaluated.
  
  
  RESULTS
  Our patients were 100 males and 30 females who had been newly diagnosed with type II DM. The refractive and fpg levels were measured twice in all patients. The average values of the initial measurements were as follows: fpg level, 415 mg/dl; average refractive value, +2.5 D (Dioptres). The average end of period measurements were fpg, 203 mg/dl; average refractive value, +0.75 D. There is a statistically significant difference between after four weeks measurements with initially measurements of fasting plasma glucose (fpg) levels (p<0.05) and there is a statistically significant relationship between changes in fpg changes with glasses ID (p<0.05) and the disappearance of blurred vision (to be greater than 50% success rate) were statistically significant (p<0.05). Also, were detected upon all these results the absence of any age and sex effects (p>0.05).
  
  
  CONCLUSIONS
  Refractive error is affected in patients with newly diagnosed diabetes mellitus; therefore, plasma glucose levels should be considered in the selection of glasses.
authors: Dr. Abdülhekim Yarbağ, SMECC. Abdulhekim Yarbag, Special Marmara Eye Clinic Center, Sakarya, Turkey.
authors: Abdülhekim
authors: A
authors: Yarbağ
authors: Dr. Hayrullah Yazar, SAUFM. Assistant Professor, Sakarya University Faculty of Medicine, Sakarya, Turkey.
authors: Hayrullah
authors: H
authors: Yazar
authors: Dr. Mehmet Akdoğan, SAUFM. Professor, Sakarya University Faculty of Medicine, Sakarya, Turkey.
authors: Mehmet
authors: M
authors: Akdoğan
authors: Ahmet Pekgör, NEUSF. Necmettin Erbakan University Department of Statistics Faculty of Sciences.
authors: Ahmet
authors: A
authors: Pekgör
authors: Dr. Suleyman Kaleli, SAUFM. Associate Professor, Sakarya University Faculty of Medicine, Sakarya, Turkey.
authors: Suleyman
authors: S
authors: Kaleli
keywords: Diabetes mellitus; Fasting plasma glucose; Hyperopia; Refractive error