Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase 2/3 Randomized, Controlled, Double-Masked, Multi-Center, Comparative Trial, In Parallel Groups, To Compare The Safety And Efficacy Of Intravitreous Injections Of 0.3 Mg Pegaptanib Sodium (Macugen®), Given As Often As Every 6 Weeks For 2 Years, To Sham Injections In Subjects With Diabetic Macular Edema (DME) Involving The Center Of The Macula With An Open-Label Macugen Year 3 Extension.
Brief Summary: The purpose of the study is to test whether Macugen injected into the eye improves vision in more patients than the currently existing standard of care laser therapy. The safety of Macugen compared to standard of care laser will also be evaluated.


Options:
A: Inclusion Criteria:

* Diabetic macular edema with center involvement in at least one eye
* Type 1 or type 2 diabetes mellitus diagnosed 2 years prior to screening
* Laser photocoagulation in the study eye can be withheld for at least 3 months after randomization

Exclusion Criteria:

* Patients with uncontrolled systemic or ocular diseases
* Have any history of any intraocular surgery in the study eye within the past 6 months preceding screening
* Conditions that require chronic concomitant therapy with systemic or topical ocular corticosteroids

Other protocol-defined inclusion/exclusion criteria applied to the study.
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:

* macular edema associated with diabetes
* visual acuity between 20/50 and 20/200

Exclusion Criteria:

* recent laser therapy in the eye
* recent signs of uncontrolled diabetes
* blood pressure worse than 160/100
* severe cardiac disease
D: 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.

Answer: C