Please select the eligibility criteria that correspond to the clinical trial below.
Title: N/A
Brief Summary: This study will evaluate the safety and efficacy of an intravitreal implant of dexamethasone for the treatment of diabetic macular edema.


Options:
A: Inclusion: Persistent macular edema associated with diabetic retinopathy, uveitis, retinal vein occlusion, or Irvine-Gass syndrome, persisting at least 90 days after laser treatment or medical management by a physician.

Exclusion: Females who are pregnant or lactating, and females of childbearing potential not using adequate birth control for the duration of the study. Any intraocular procedures or laser treatment less than 90 days before enrollment.
B: Inclusion Criteria:

* Age \>= 18 years
* Diagnosis of diabetes mellitus types 1 or 2
* Diabetic macular oedema affecting the fovea in one or both eyes (phakic or pseudophakic) for which laser treatment is unlikely to be helpful in the opinion of the centre chief investigator
* Best corrected visual acuity of 17-72 letters (6/12 -6/120)
* Retinal thickness \> 250 micron in central 1mm subfield on Stratus (time domain) OCT and 300 on Spectral domain OCT
* Previous macular laser treatment, or the investigator believes laser treatment is unlikely to be helpful
* Intraocular pressure \<22mmHg
* Women of childbearing potential must have a negative urine pregnancy test at the screening visit and prior to treatment. A woman is considered of childbearing potential unless she is postmenopausal and without menses for 12 months or is surgically sterilised
* Written informed consent has been obtained.

Exclusion Criteria:

* Known allergy to Ozurdex, Avastin or agents used in the study
* Women who are pregnant, nursing, or planning a pregnancy, or who are of childbearing potential and not using reliable means of contraception
* Glaucoma which is uncontrolled or is controlled but with more than one medication or with only one medication and with glaucomatous field defects
* Loss of vision due to other causes (e.g. age related macular degeneration, myopic macular degeneration, retinal vein occlusion)
* Macular oedema due to other causes
* An ocular condition that would prevent visual acuity improvement despite resolution of oedema (such as foveal atrophy or substantial premacular fibrosis)
* Treatment with IVTA within the last 6 months or peribulbar TA within the last 3 months or bevacizumab within the last 2 months.
* Cataract surgery within the last 6 months
* Retinal laser treatment within the last 3 months
* History of herpes virus infection in study eye
* Media opacity including cataract that already precludes adequate macular photography and laser treatment, or cataract that is likely to require surgery within 2 years
* Known allergies to dexamethasone or bevacizumab
* Patient is already receiving systemic steroid treatment \> 5mg prednisolone daily or equivalent)
* Intercurrent severe disease such as septicemia, any condition which would affect follow-up or photographic documentation (e.g. geographical, psycho-social)
* History of chronic renal failure requiring dialysis or renal transplant
* Blood pressure \>180/110
* Patient has a condition or is in a situation that in the investigator's opinion may put the patient at significant risk, may confound the study results, or may interfere significantly with the patient's participation in the study
C: Key Inclusion Criteria:

* 18 years of age or older with diabetic macular edema;
* Decrease in visual acuity in at least one eye as a result of macular edema (20/50 or worse);
* Visual acuity in other eye no worse than 20/200

Key Exclusion Criteria:

* Known anticipated need for ocular surgery within first 12 months of study;
* History of glaucoma or current high eye pressure requiring more than 1 medication;
* Uncontrolled systemic disease;
* Known steroid-responder;
* Use of systemic steroids
* Use of Warfarin/Heparin
D: Key Inclusion Criteria:

* 18 years of age or older with diabetic macular edema;
* Decrease in visual acuity in at least one eye as a result of macular edema (20/50 or worse);
* Visual acuity in other eye no worse than 20/200

Key Exclusion Criteria:

* Known anticipated need for ocular surgery within next 12 months;
* History of glaucoma or current high eye pressure requiring more than 1 medication;
* Uncontrolled systemic disease;
* Known steroid-responder;
* Use of systemic steroids;
* Use of Warfarin/Heparin

Answer: D