Retinal VesselsRetinal VeinRetinal ArteryVenulesPhotographyArteriolesRetinal DiseasesSingaporeFluorescein AngiographyRetinal NeovascularizationBlood VesselsRisk FactorsRetinopathy of PrematurityFundus OculiCross-Sectional StudiesDiabetic RetinopathyCardiovascular DiseasesRetinaRetinal Artery OcclusionOptic DiskBlood-Retinal BarrierChoroidRetinal Vein OcclusionLaser-Doppler FlowmetryAxial Length, EyeLymphatic VesselsEye ColorLeukostasisRegional Blood FlowDiagnostic Techniques, OphthalmologicalImage Processing, Computer-AssistedIntraocular PressureOphthalmodynamometryCapillariesBlood Flow VelocityOphthalmoscopyRetinoscopyMicrocirculationCoronary VesselsBlood PressureRetinal TelangiectasisOphthalmoscopesOximetryOxygenOptic AtrophyMacula LuteaCapillary PermeabilityRetinal VasculitisVasodilationVitreous BodyRetinal DegenerationEndothelium, VascularInjections, IntraocularHyperoxiaFluoresceinMicrovesselsDisease Models, AnimalVasoconstrictionTomography, Optical CoherenceElectroretinographyFractalsIntravitreal InjectionsNeurofilament ProteinsVisual AcuityVascular Endothelial Growth Factor AGlaucoma, Open-AngleOptic Nerve DiseasesPericytesRetinal HemorrhageEye DiseasesNeovascularization, PathologicMice, Inbred C57BLLaser CoagulationLasersOptic NerveRetinal DetachmentApyraseFluorescent Antibody Technique, IndirectRetinal Ganglion CellsFluoresceins