ABSTRACT
PURPOSE: This study aimed to assess the detection and characteristics of feeder vessels (FV) of subfoveal choroidal neovascularization (CNV) in age-related macular degeneration (ARMD). METHODS: A retrospective study of 59 consecutive eyes presenting subfoveal CNV secondary to ARMD was performed. Feeder vessels were detected by means of indocyanine green video angiography using a confocal scanning laser ophthalmoscope. The following factors were analyzed: patient age, visual acuity using Snellen lines and/or ETDRS, fluorescein angiographic (FA) patterns, size of CNV, and time of evolution. The following characteristics of FV also were evaluated: FV pattern (umbrella or racquet-like pattern), number, width and the location with respect to the fovea. RESULTS: FV were detected in 36 subfoveal CNV (61%). No significant differences were noted between the presence of FV in terms of visual acuity (U Mann-Whitney, p=0.816), FA patterns (Fisher's exact probability test p=0.265), size of the CNV (U Mann-Whitney, p=0.267) and time of evolution (U Mann-Whitney, p=0.099). The most common pattern FV was a the racquet-like pattern, inserted in the subfoveal CNV from an extrafoveal origin on the nasal side after a variable course of approximately 1.27 mm (range 0.1-2.9 mm), with a diameter of 83.3 microm (range 20-150 microm). CONCLUSIONS: FV were detected in 36 subfoveal CNV (61%) in ARMD. Only 16 subfoveal CNV (25.4%) were considered eligible for FV treatment.
Subject(s)
Choroidal Neovascularization/diagnostic imaging , Coloring Agents , Indocyanine Green , Macular Degeneration/complications , Aged , Aged, 80 and over , Angiography/methods , Choroidal Neovascularization/etiology , Female , Fovea Centralis , Humans , Male , Middle Aged , Retrospective StudiesABSTRACT
Objetivo: Detectar y caracterizar los vasos nutricios(VNA) de las membranas neovasculares(NVC) subfoveales en la degeneración macular asociadaa la edad (DMAE).Métodos: Estudio retrospectivo en 59 ojos consecutivoscon NVC subfoveal secundaria a DMAE.Los VNA fueron detectados gracias a la videoangiografíaverde-indocianina, con un oftalmoscopioláser confocal de barrido. Se analizaron los factoressiguientes: edad, AV con los optotipos de Snelleny/o ETDRS, patrón de la AFG, tamaño de la NVCy tiempo de evolución. En los VNA se estudió elpatrón angiográfico, en paraguas o en raqueta, elnúmero, grosor y localización con respecto a lafóvea.Resultados: Se detectaron VNA en 36 NVC subfoveales(61%). No se encontraron diferencias significativasentre la presencia de vaso nutricio y la AV (U Mann Whitney, p=0,816), el patrón de la AFG(fisher test, p=0,265), el tamaño de la NVC (UMann Whitney, p=0,267), o el tiempo de evolución(U Mann Whitney, p=0,099). El patrón de la AFGmás común fue el tipo raqueta, con nacimientonasal extrafoveal, con un recorrido medio de 1,27mm (rango 0,1-2,9) y un diámetro medio de 83,3μm (rango 20-150).Conclusiones: Se pudo identificar VNA en el 61%de una población con NVC bien o mal delimitadas,y solo 16 NVC subfoveales (25,4%) reunieron lascaracterísticas necesarias para realizar tratamientocon láser del VNA
Purpose: This study aimed to assess the detection and characteristics of feeder vessels (FV) of subfoveal choroidal neovascularization (CNV) in agerelated macular degeneration (ARMD). Methods: A retrospective study of 59 consecutive eyes presenting subfoveal CNV secondary to ARMD was performed. Feeder vessels were detected by means of indocyanine green video angiography using a confocal scanning laser ophthalmoscope. The following factors were analyzed: patient age, visual acuity using Snellen lines and/or ETDRS, fluorescein angiographic (FA) patterns, size of CNV, and time of evolution. The following characteristics of FV also were evaluated: FV pattern (umbrella or racquet-like pattern), number, width and the location with respect to the fovea. Results: FV were detected in 36 subfoveal CNV (61%). No significant differences were noted between the presence of FV in terms of visual acuity (U Mann-Whitney, p=0.816), FA patterns (Fishers exact probability test p=0.265), size of the CNV (U Mann-Whitney, p=0.267) and time of evolution (U Mann-Whitney, p=0.099). The most common pattern FV was a the racquet-like pattern, inserted in the subfoveal CNV from an extrafoveal origin on the nasal side after a variable course of approximately 1.27 mm (range 0.1-2.9 mm), with a diameter of 83.3 μm (range 20-150 μm). Conclusions: FV were detected in 36 subfoveal CNV (61%) in ARMD. Only 16 subfoveal CNV (25.4%) were considered eligible for FV treatment
