title: The ocular biometric differences of diabetic patients.
abstract: OBJECTIVE
  To investigate the differences in ocular biometric and keratometric characteristics in comparison with biometric measurements using the noncontact optical low coherence reflectometer (OLCR) (Lenstar LS 900, Haag-Streit) on diabetic patients.
  
  
  METHODS
  The eyes of 170 patients were included in this study, including 81 diabetic and 89 nondiabetic subjects. Optical biometric measurements of diabetic and nondiabetic patients (between the ages of 25 and 85 years) who applied to the ophthalmology clinic were noted from March to June 2013. Detailed ophthalmologic examinations were done for every subject. Biometric measurements were done using the noncontact OLCR device.
  
  
  RESULTS
  Patient age ranged from 29 to 83 years. Subgroup analyses were done in diabetic patients according to their Hba1C levels. The minimum Hba1C value was 5.3, maximum was 12.4, and mean was 7.56 ± 1.48. The median duration of diabetes was 5 years (25th-75th percentile 3.00-11.75). Diabetic patients were found to have thicker lens and shallower anterior chamber in both eyes compared to nondiabetic control subjects. There were no statistical differences between the groups according to central corneal thickness, axial length, or keratometric values in both eyes. However, lens thicknesses were found to be thicker and anterior chamber depth values were found to be shallower in the diabetic group in both eyes.
  
  
  CONCLUSIONS
  It may useful to determine eyeglasses prescription, refractive surgery calculation, lens selection, and previous cataract surgery according to biometric measurements after the regulation of blood glucose.
authors.affiliation: Department of Ophthalmology, Faculty of Medicine, Adnan Menderes University, Aydin - Turkey.
authors.forename: Tolga
authors.initials: T
authors.lastname: Kocatürk
authors.forename: Mehmet Özgür
authors.initials: MÖ
authors.lastname: Zengin
authors.forename: Harun
authors.initials: H
authors.lastname: Cakmak
authors.forename: Gökhan Evren
authors.initials: GE
authors.lastname: Evliçoglu
authors.forename: Sema Oruç
authors.initials: SO
authors.lastname: Dündar
authors.forename: Imran Kurt
authors.initials: IK
authors.lastname: Omürlü
authors.forename: Mustafa
authors.initials: M
authors.lastname: Unübol
authors.forename: Engin
authors.initials: E
authors.lastname: Güney
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000867:Anterior Chamber / Q000473:pathology*; D001699:Biometry / Q000379:methods*; D001786:Blood Glucose / Q000378:metabolism; D003920:Diabetes Mellitus / Q000097:blood / Q000473:pathology*; D005260:Female; D006442:Glycated Hemoglobin / Q000378:metabolism; D006801:Humans; D007908:Lens, Crystalline / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009929:Organ Size
chemical_list: D001786:Blood Glucose; D006442:Glycated Hemoglobin; C517652:hemoglobin A1c protein, human