ABSTRACT
PURPOSE: To assess the influence of glaucoma filtration surgery on anatomical and functional tests for glaucoma evaluation. METHODS: Twenty-five eyes (25 patients) with primary open-angle glaucoma were evaluated, prospectively. Data were collected on vision acuity, intraocular pressure, standard automated perimetry, frequency doubling technology perimetry, scanning laser polarimetry (GDx) and confocal scanning laser ophthalmoscopy (HRT II) before and 3-6 months after surgery. RESULTS: Mean (+/-SD) pre- and postoperative visual acuities (logMAR) were 0.28 (+/-0.18) and 0.30 (+/-0.17), respectively (P=0.346). In a mean time of 4.5 (+/-1.1) months after surgery, the mean preoperative intraocular pressure of 20.7 (+/-5.4) mmHg decreased to 11.04 (+/-2.52) mmHg (P<0.001). The results of the standard automated perimetry, frequency doubling technology perimetry, scanning laser polarimetry and confocal scanning laser ophthalmoscopy diagnostic methods revealed no significant difference (P>0.162) between pre and postoperative values and no significant correlation (P>0.296) between intraocular pressure reduction and value changes. CONCLUSION: No significant change on any test variable was detected after glaucoma filtration surgery. Trabeculectomy does not appear to influence standard automated perimetry, frequency doubling technology perimetry, scanning laser polarimetry and confocal scanning laser ophthalmoscopy (HRT II) results after a 4.5-month period of surgery in early to moderate glaucoma.
Subject(s)
Glaucoma, Open-Angle/physiopathology , Glaucoma, Open-Angle/surgery , Nerve Fibers/pathology , Optic Disk/pathology , Optic Nerve Diseases/physiopathology , Trabeculectomy , Visual Fields/physiology , Female , Humans , Intraocular Pressure/physiology , Male , Middle Aged , Prospective Studies , Vision Disorders/physiopathology , Visual Acuity/physiology , Visual Field TestsABSTRACT
Os autores verificaram as pressöes intra-ocular e arterial de 40 pacientes com doença de Hansen que residem em colônia de hansenianos e 20 indivíduos voluntários sadios. Os pacientes e o grupo controle tiveram as pressöes intra-ocular e arterial verificadas 6 vezes. As pressöes intra-ocular e arterial foram tomadas após os pacientes deitarem em decúbito dorsal e todo o procedimento foi repetido 5 e 10 minutos após deitarem. Foi pedido aos pacientes para sentarem e novas medidas foram tomadas, isto é, imediatamente, 5 e 10 minutos após sentarem. A média de Po foi significantemente maior na posiçäo deitada do que sentada, para todos os tempos estudados, em ambos os grupos (p<0,001). Näo foi encontrada diferença significante entre indivíduos normais e portadores da Doença de Hansen. Também näo foi encontrada alteraçäo da pressäo arterial nas diferentes posiçöes estudadas em ambos os grupos