ABSTRACT
PURPOSE: To make a visual field retrospective analysis on a group of patients with primary open angle glaucoma (POAG) and to evaluate whether different refractive errors could have different progression of the 30 degrees central sensitivity. METHODS: A total of 110 patients with POAG (52 men and 58 women) were included in the study. All the patients were divided into four subgroups based on the refractive error. The visual field of all the included patients was assessed by an Octopus 30 degrees central visual field every 6 months, for a total of 837 visual fields examined. The resulting data were analyzed by PERIDATA for Windows 1.7 TREND function. Mean defect (MD) and loss variance (LV) were considered for the analysis. RESULTS: At the first examination, 82% of eyes showed a global decrease of differential light sensitivity (MD >2 dB) and in 67% the distribution of the defect was nonhomogeneous (LV >6 dB). The analysis of variance for subgroups showed a more significant decrease of MD in highly myopic patients. A linear regression analysis highlighted a statistically significant change in time of MD in 36% and of LV in 34% of the eyes studied. Highly myopic patients had the highest (p<0.01) percentage of change of MD and LV (46% and 42%, respectively). Among the four subgroups, there was no difference in progression of MD decrease in time. CONCLUSIONS: These results showed that after 5 years of glaucoma, the visual field was altered in most of the eyes examined (82%) and that in 67% of cases, its defect was nonhomogeneous and worsened with the increase of myopia. The regression linear analysis of visual field changes in time showed a progressive increase of MD and LV in approximately one third of all the eyes examined.
Subject(s)
Glaucoma, Open-Angle/physiopathology , Myopia/physiopathology , Optic Nerve Diseases/physiopathology , Vision Disorders/physiopathology , Visual Fields , Adrenergic beta-Antagonists/therapeutic use , Adult , Aged , Disease Progression , Female , Glaucoma, Open-Angle/drug therapy , Humans , Intraocular Pressure , Male , Middle Aged , Optic Nerve Diseases/drug therapy , Retrospective Studies , Visual Field TestsABSTRACT
PURPOSE: To describe postoperative laser-assisted in situ keratomileusis (LASIK) flap dislocation occurred after trauma METHODS: Ultrabiomicroscopy (UBM) is used to obtain a high-resolution imaging of the cornea. RESULTS: The UBM results are presented and compared with histologic and confoscan findings CONCLUSIONS: The technique is useful and easy to perform, offering more opportunities to study the anatomical changes in LASK flap dislocation occurred after trauma.
