Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomized, Double-masked, Multicenter, Laser-controlled Phase III Study Assessing the Efficacy and Safety of Ranibizumab (Intravitreal Injections) as Adjunctive and Mono-therapy in Patients With Visual Impairment Due to Diabetic Macular Edema
Brief Summary: CRFB002D2301: The core study was designed to confirm the efficacy and safety of ranibizumab (0.5 mg) as adjunctive therapy when added to laser photocoagulation and/or mono-therapy in patients with visual impairment due to diabetic macular edema.

CRFB002D2301E1: A 24 month open-label extension study for participants who completed the 12 month core study evaluated the long-term safety and efficacy of ranibizumab (0.5 mg) as symptomatic treatment for visual impairment due to diabetic macular edema.


Options:
A: Inclusion:

* Signed informed consent and authorization of use and disclosure of protected health information
* Age greater than 18 years
* Diagnosis of diabetes mellitus (type 1 or type 2) and serum HbA1c greater than 5.5% within 12 months of randomization
* Retinal thickening secondary to diabetes mellitus (diabetic macular edema) involving the center of the fovea.
* Diagnosis must be confirmed by OCT images
* Foveal thickness of greater than 250, as assessed by OCT
* Best corrected visual acuity score in the study eye of 20/40 to 20/320 inclusive (Snellen equivalents using the ETDRS protocol at a distance of 4 meters). Only one eye will be treated in the study. If both eyes are eligible, the investigator will select the eye to be enrolled. Visual acuity in the non-study eye must be greater than 20/800.
* In the opinion of the investigator, decreased vision in the study eye is due to foveal thickening from DME and not from other obvious causes.
* In the opinion of the investigator, laser photocoagulation can be withheld for at least 30 days after the patient has enrolled in the study

Exclusion Criteria:

* Panretinal photocoagulation or macular photocoagulation within 3 months of study entry in the study eye
* Use of intraocular or periocular injection of steroids in the study eye (e.g., triamcinolone) within 3 months of study entry
* Previous participation in a study and receipt of anti-angiogenic drugs (pegaptanib sodium, ranibizumab, anecortave acetate, protein kinase C inhibitor, etc.) within 2 months of study entry
* Eyes in which the investigators do not feel appropriate to do any additional laser photocoagulation
* Proliferative diabetic retinopathy in the study eye, with the exceptions of inactive, fibrotic proliferative diabetic retinopathy that has regressed following pan-retinal laser photocoagulation or tufts of neovascularization elsewhere (NVE) less than one disc area with no vitreous hemorrhage
* Vitreomacular traction or epiretinal membrane in the study eye evident biomicroscopically or by OCT
* Structural damage to the center of the macula in the study eye likely to preclude improvement in visual acuity following the resolution of macular edema, including atrophy of the retinal pigment epithelium, subretinal fibrosis, laser scar(s), macular ischemia, or organized hard exudate plaque
* Ocular disorders in the study eye that may confound interpretation of study results, including retinal vascular occlusion, retinal detachment, macular hole, or choroidal neovascularization of any cause (e.g., age related macular degeneration (AMD), ocular histoplasmosis, or pathologic myopia)
* Concurrent disease in the study eye that could compromise visual acuity or require medical or surgical intervention during the first 6-month study period
* Eyes which are likely to need cataract surgery and intraocular lens implantation within the first 6 months of the study
* Cataract surgery in the study eye within 3 months of study entry; Yttrium-Aluminum-Garnet (YAG) laser capsulotomy within 2 months of study entry; or any other intraocular surgery within 3 months preceding Day 0.
* History of vitreoretinal surgery in the study eye within 3 months of study entry
* Uncontrolled glaucoma (defined as intraocular pressure greater than 30 mm Hg despite treatment with anti-glaucoma medications)
* Uncontrolled diabetes mellitus, as evidenced by glycosylated hemoglobin (HbA1c) value greater than 12%
* Premenopausal women not using adequate contraception
* Any women who are pregnant
* International normalized ratio (INR) greater than or equal to 3.0 (e.g. due to current treatment with warfarin). The use of aspirin or other anticoagulants is not an exclusion
* History of gastrointestinal bleeding within 2 months of study enrollment
* History of major gastrointestinal, cardiothoracic, gynecological, genitourinary, or orthopedic surgeries within 2 months of study enrollment
* History of cerebral vascular accident, myocardial infarction, transient ischemic attacks within 6 months of study enrollment
* Any patients who are on renal dialysis
B: Inclusion Criteria:

* Willingness to provide written informed consent and, at U.S. sites, Health Insurance Portability and Accountability Act (HIPAA) authorization, and in other countries, as applicable according to national laws.
* Age ≥ 18 years.
* Diabetes mellitus (Type 1 or 2) .
* Retinal thickening secondary to diabetes mellitus (DME) involving the center of the fovea with central macular thickness ≥ 275 µm in the center subfield as assessed on optical coherence tomography (OCT).
* Best corrected visual acuity (BCVA) score in the study eye of 20/40 to 20/320 approximate Snellen equivalent using the Early Treatment Diabetic Retinopathy Study (ETDRS) protocol at an initial testing distance of 4 meters.
* Decrease in vision determined to be primarily the result of DME and not to other causes.
* For sexually active women of childbearing potential, use of an appropriate form of contraception (or abstinence) for the duration of the study.
* Ability (in the opinion of the investigator) and willingness to return for all scheduled visits and assessments.

Exclusion Criteria:

* History of vitreoretinal surgery in the study eye.
* Panretinal photocoagulation (PRP) or macular laser photocoagulation in the study eye within 3 months of screening.
* Previous use of intraocular corticosteroids in the study eye (eg, triamcinolone acetonide \[TA\]) within 3 months of screening.
* Previous treatment with anti-angiogenic drugs in either eye (pegaptanib sodium, anecortave acetate, bevacizumab, ranibizumab, etc) within 3 months of the Day 0 (first day of treatment) visit.
* Proliferative diabetic retinopathy (PDR) in the study eye, with the exception of inactive, regressed PDR.
* Iris neovascularization, vitreous hemorrhage, traction retinal detachment, or preretinal fibrosis involving the macula in the study eye.

Concurrent Ocular Conditions

* Vitreomacular traction or epiretinal membrane in the study eye.
* Ocular inflammation (including trace or above) in the study eye.
* History of idiopathic or autoimmune uveitis in either eye.
* Structural damage to the center of the macula in the study eye that is likely to preclude improvement in VA following the resolution of macular edema, including atrophy of the retinal pigment epithelium (RPE), subretinal fibrosis, or organized hard-exudate plaque.
* Ocular disorders in the study eye that may confound interpretation of study results, including retinal vascular occlusion, retinal detachment, macular hole, or choroidal neovascularization (CNV) of any cause (eg, age-related macular degeneration (AMD), ocular histoplasmosis, or pathologic myopia).
* Concurrent disease in the study eye that would compromise visual acuity or require medical or surgical intervention during the study period.
* Cataract surgery in the study eye within 3 months, yttrium-aluminum-garnet (YAG) laser capsulotomy within the past 2 months, or any other intraocular surgery within the 90 days preceding Day 0.
* Aphakia or absence of the posterior capsule in the study eye.
* Uncontrolled glaucoma or previous filtration surgery in the study eye.
* Spherical equivalent of the refractive error in the study eye of more than -8 diopters myopia.
* Evidence at examination of infectious blepharitis, keratitis, scleritis, or conjunctivitis in either eye or current treatment for serious systemic infection.
* Uncontrolled blood pressure.
* History of cerebral vascular accident or myocardial infarction within 3 months prior to Day 0.
* Uncontrolled diabetes mellitus.
* Renal failure requiring dialysis or renal transplant.
* Participation in an investigational trial within 30 days prior to screening that involved treatment with any drug (excluding vitamins and minerals) or device.
* History of other disease, metabolic dysfunction, physical examination finding, or clinical laboratory finding giving reasonable suspicion of a disease or condition that contraindicates the use an investigational drug, might affect interpretation of the results of the study, or renders the subject at high risk from treatment complications.
* Pregnancy or lactation.
* History of allergy to fluorescein.
* History of allergy to ranibizumab injection or related molecule.
C: Inclusion Criteria:

* Center-involving Diabetic macular edema unresponsive to LASER therapy performed at least 3 moths prior to inclusion;
* Best corrected visual acuity equal or worse than 20/40 and better than 20/800;
* Central subfield macular thickness greater than 300 µm

Exclusion Criteria:

* Aphakia
* High-risk proliferative diabetic retinopathy
* Previous treatment for DME in the past three months
D: Inclusion Criteria:

* Visual acuity impairment
* Diabetic macular edema in at least one eye
* Type 1 or type 2 diabetes mellitus
* Medication for the diabetes treatment must be stable for the last 3 months

Exclusion Criteria:

* Patients with uncontrolled systemic or ocular diseases
* Laser photocoagulation in the study eye for the last 3 months
* Any history of any intraocular surgery in the study eye within the past 3 months
* Blood pressure \> 160/100 mmHg

Extension Inclusion Criteria:

-Completion of the Core Study

Answer: D