Clinical Trials Logo

Clinical Trial Summary

Retinal optical coherence tomography (OCT) is an established technology which enables a detailed cross-sectional visualization of the retinal micro-anatomy, and an objective measurement of its thickness in-vivo. Multifocal electroretinogram (MfERG) measures function of the central retina. Both technologies are relatively new and they provide complimentary to each other information on retinal anatomy and function.

The aims of this study is to establish normal ranges for OCT and mfERG measurements related to age, gender and reproductive factors such as parity and the use of contraception in Norwegians; to assess the presumably healthy central retina with the use of anti-inflammatory medication with relation to age and sex ; to study the frequency and extent of retinal thickening and change in retinal function in patients with anterior uveitis not complicated with macular edema; to assess whether the presence of the HLA-B27 haplotype or uveitis recidive affects macular thickening/function in uveitis.


Clinical Trial Description

Normal optical coherence tomography (OCT) and Multifocal electroretinogram (MfERG) measurements may vary with race, age, sex, parity and the use of hormone therapy in health. It has therefore been recommended to gather normative data on the individual OCT/MfERG equipment in each laboratory. This is the reason why we gathered our local normative material on both machines. We also assessed our normative material on the OCT in relation to age, sex, parity and the use of contraception for future matching with patients.

It has been hypothesized that para-inflammation states are involved in retinal aging in health. We assume that the age-related changes we observed in our normative OCT material are related to low-grade chronic inflammation in the retina. We therefore assessed the effect of to commercially available anti-inflammatory eye drops- diclofenac and dexamethasone,which are often used in inflammation-related states in ophthalmology for their effect on macular thickness in health and with aging.

Uveitis is a frank intraocular inflammation which may lead to macular edema. Macular edema is often transient in uveitis and its presence has been previously reported in severe or long-lasting uveitis. In some cases mecular edema may become chronic or refractory to treatment. However, whether uncomplicated anterior uveitis with no clinically evident macular edema leads to macular thickening detectable with the OCT, or whether monolateral uveitis may cause bilateral macular thickening is not known. We therefore assesed both eyes of patients with anterior uveitis for macular thickening with the OCT.

To correlate macular anatomy with its function some subjects included in the OCT study were also examined with the mfERG. However, at present the MfERG result have not been analyzed. ;


Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Basic Science


Related Conditions & MeSH terms


NCT number NCT00476593
Study type Interventional
Source Norwegian University of Science and Technology
Contact
Status Completed
Phase N/A
Start date September 2005
Completion date December 2010

See also
  Status Clinical Trial Phase
Completed NCT04292912 - A Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of GSK2798745 in Participants With Diabetic Macular Edema Phase 1
Recruiting NCT05976139 - Micropulsed Laser in Patients With Macular Oedema in Retinal Dystrophies N/A
Completed NCT03660371 - ILM Peeling in PDR Patients Undergoing PPV for VH N/A
Completed NCT03660345 - PPV With Internal Limiting Membrane Peeling for Treatment-Naïve DME Phase 3
Completed NCT01660802 - Safety and Efficacy Study of Dexamethasone in the Treatment of Patients With Macular Edema Following Retinal Vein Occlusion (RVO) Phase 3
Completed NCT01908816 - An Open-label Extended Clinical Protocol of Ranibizumab to Evaluate Safety and Efficacy in Rare VEGF Driven Ocular Diseases. Phase 3
Completed NCT04592419 - A Study to Evaluate the Efficacy, Durability, and Safety of KSI-301 Compared to Aflibercept in Patients With Macular Edema Due to Retinal Vein Occlusion (RVO) Phase 3
Completed NCT02867735 - A Study to Assess the Safety, Tolerability, Pharmacokinetics and Pharmacodynamic Activity of Intravitreal LKA651 in Patients With Macular Edema Phase 1
Completed NCT02623673 - Simultaneous Therapy With Intravitreal Dexamethasone Implant and Bevacizumab for the Treatment of Macular Edema N/A
Terminated NCT01946399 - Ozurdex Implant for Macular Edema After Treatment Failure With Anti-VEGF N/A
Completed NCT01428388 - Bevacizumab Versus Ranibizumab in Treatment of Macular Edema From Vein Occlusion N/A
Completed NCT01231633 - Comparison of Initial Ozurdex (Dexamethasone Implant) to Avastin (Bevacizumab) for Treatment of Macular Edema Caused by Central Retinal Vein Occlusion (CRVO) N/A
Recruiting NCT01023113 - To Compare Visual Field Impairment in Conventional Double Frequency Nd: YAG Panretinal Photocoagulation With PASCAL Panretinal Photocoagulation N/A
Terminated NCT00969293 - Study to Assess the Safety and Tolerability of a Single Administration of FOV2302 (Ecallantide) in Patients With Macular Edema Associated With Central Retinal Vein Occlusion Phase 1
Completed NCT00970957 - Safety and Effectiveness of Bevacizumab Intravitreal Injections in the Treatment of Macular Edema Secondary to Retinal Vein Occlusion Phase 3
Terminated NCT00918554 - Efficacy Study of Methotrexate to Treat Sarcoid-associated Uveitis Phase 4
Completed NCT00668239 - Diffuse Diabetic Maculopathy With Intravitreal Triamcinolone or Laser N/A
Completed NCT00411970 - 20- Versus 23- Gauge System for Pars Plana Vitrectomy Phase 4
Terminated NCT01939691 - Macular Edema Nepafenac vs. Difluprednate Uveitis Trial Phase 4
Active, not recruiting NCT04120311 - Episcleral Dexamethasone for Treatment of Macular Edema and Inflammatory Disorders of the Posterior Pole Phase 1