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Completed

NCT Number: NCT02217306

Contrast Sensitivity and Diabetic Macular Edema

Contrast sensitivity is a tool use to evaluate the visual function in all patients. It can be modified by different pathologies or by age. The purpose of this study is to identify the changes that could be in relationship with the course of diabetic retinopathy comparing with diabetic patient without retinopathy and in patients with diabetic macular edema so if it is a difference, research for therapeutic strategies to improve it in this patients.

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Key information

Conditions

Diabetes Mellitus Cardiovascular Diseases Diabetes Complications Diabetic Angiopathies Diabetic Retinopathy Endocrine System Diseases Eye Diseases Glucose Metabolism Disorders Macular Degeneration Macular Edema Metabolic Diseases Nutritional and Metabolic Diseases Retinal Degeneration Retinal Diseases Vascular Diseases

Age range

40 year–70 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Hospital Juarez de Mexico

Mexico City, 07760, Mexico

About this study

Contrast sensitivity is defined as a subjective measurement, it is the ability to separate the image between figure and background, taking into account the minimum amount of light required; it is evaluated by the contrast threshold, which is the smallest amount of contrast needed to be able to see a target and solve their characteristics, would be his reciprocal value. Medina et al. curve reported in healthy Mexicans SC 5 to 80, where > 51 years have decreased compared to contrast sensitivity studies international; further that contrast sensitivity in older groups of 41 years is decreased high frequency.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • DIABETIC PATIENTS
  • 40-60 YEARS OLD
  • ANY GENDER
  • VISUAL ACUITY >0.25 IN DECIMAL EQUIVALENT,

Exclusion criteria

  • PATIENTS WITH CATARACTS OR OTHER MACULOPATHY
  • PATIENTS WITH CONTACT LENSES
  • PATIENTS WITH REFRACTIVE ERROR >6.00DP
  • PATIENTS WITH PREVIOUS OCULAR SURGERY

Treatment and study plan

Primary outcomes

  1. Contrast Sensitivity

    Time frame: up to 8 months

    Diabetic patients who are attended at Ophthalmology service in a general hospital undergo to contrast sensitivity test evaluating all frequency by software with 5 spacial frequency (1.5, 3, 6, 12 and 18 cycle grade, Stereoptical Co 1996) in the Visual Basic program.

Sponsors and collaborators

Lead sponsor

Hospital Juarez de Mexico

Other Gov

Registry information

Important dates

Study start
2014
Primary completion
2014
Study completion
2014
First posted
Aug 15, 2014
Registry last updated
Aug 15, 2014

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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