title: Measurement of foveal thickness by optical coherence tomography in adult haemodialysis patients with diabetic nephropathy.
abstract: BACKGROUND
  Several studies have demonstrated the efficacy of hemodialysis (HD) on macular edema in diabetic patients.
  
  
  OBJECTIVE
  To study the effects of a HD session on foveal thickness by optical coherence tomography (OCT) in adult patients with type 2 diabetes mellitus with chronic renal failure (CRF) secondary to stage 5 diabetic nephropathy in HD.
  
  
  METHODS
  We studied 25 eyes of 14 patients who underwent analytical studies and pre-HD and post-HD OCT.
  
  
  RESULTS
  As a group, the foveal thickness did not change after one session of HD in the 25 eyes studied (245.28 ± 52.21 μ versus 240.40 ± 40.25 μ) (p = 0.428) (2% reduction) or correlated with any clinical or laboratory parameters analyzed.When comparing the subgroup of 13 eyes in which the foveal thickness did not change or decreased compared to the subgroup of 12 eyes in which the foveal thickness increased we found that in the first subgroup the bath temperature was significantly higher (37.00 ± 0.00 versus 36.29 ° C, p = 0.008) and the conductivity was significantly lower (14.00 ± 0.00 versus 14.29 ± 0.10 mS / cm, p = 0.030).
  
  
  CONCLUSIONS
  HD may modify the foveal retinal thickness as a function of changing parameters such as bath temperature and conductivity.
authors.affiliation: Nephrology Department, Gran Canaria Island University Hospital, Las Palmas de Gran Canaria, Spain. ingrid_auyanet@hotmail.com
authors.forename: I
authors.initials: I
authors.lastname: Auyanet
authors.forename: L J
authors.initials: LJ
authors.lastname: Rodríguez
authors.forename: E
authors.initials: E
authors.lastname: Bosch
authors.forename: A Y
authors.initials: AY
authors.lastname: Sánchez
authors.forename: N
authors.initials: N
authors.lastname: Esparza
authors.forename: M M
authors.initials: MM
authors.lastname: Lago
authors.forename: A
authors.initials: A
authors.lastname: Ramírez
authors.forename: M D
authors.initials: MD
authors.lastname: Checa
mesh_terms: D000368:Aged; D003924:Diabetes Mellitus, Type 2 / Q000150:complications*; D003928:Diabetic Nephropathies / Q000628:therapy*; D003930:Diabetic Retinopathy / Q000175:diagnosis / Q000473:pathology*; D004553:Electric Conductivity; D005260:Female; D005584:Fovea Centralis / Q000648:ultrastructure*; D006801:Humans; D007676:Kidney Failure, Chronic / Q000150:complications*; D017075:Laser Coagulation; D008269:Macular Edema / Q000601:surgery; D008297:Male; D008875:Middle Aged; D006435:Renal Dialysis / Q000379:methods*; D013696:Temperature; D041623:Tomography, Optical Coherence; D014792:Visual Acuity