ISSN:0030-3755    

DOI:10.1159/000309950

出版商:S. Karger AG    

年代:1989

数据来源: Karger

摘要:

We describe herein a patient with a rare occurrence of mycotic keratitis caused by Fusarium oxysporum. The fungus destroyed the cornea, and a perforating corneal graft had to be performed. The drug of choice in such diagnosed cases is natamycin. A comparison between Fusarium oxysporum and Fusarium solani is discussed.

ISSN:0030-3755    

DOI:10.1159/000309951

出版商:S. Karger AG    

年代:1989

数据来源: Karger

摘要:

An 11-year-old girl with poor visual acuity since birth was found to have nearly complete defects of the retinochoroidal tissue in the central areas of both fundi and almost normal peripheral retinas. Her parents were first cousins. At age 24, the patient reported night blindness. An examination showed geographic atrophy of the peripheral retina and stationary macular lesions in both eyes. Her condition appeared to be a rare case of bilateral macular coloboma associated with progressive peripheral retinal atrophy.

ISSN:0030-3755    

DOI:10.1159/000309952

出版商:S. Karger AG    

年代:1989

数据来源: Karger

摘要:

We have presented a rare case of bilateral posterior sphenoethmoidal sinus mucoceles with bilateral compressive optic neuropathy. While the duration of compression was variably present over a 10-month period, there were nevertheless significant improvements in visual acuity of the right eye and visual fields bilaterally following extensive optic nerve decompression.

ISSN:0030-3755    

DOI:10.1159/000309953

出版商:S. Karger AG    

年代:1989

数据来源: Karger

摘要:

The precise study of tears can afford good help in the preoperative and postoperative management of keratoplasties. Such studies may be performed with a laser nephelometer, a very comfortable and practical equipment for quantitative protein analysis, which enables one to analyze tears much more precisely than the break-up time and the Schirmer tests. Raised albumin and IgG values were demonstrated, indicating increased permeability of the blood-tear barrier, in the group with postoperatively reduced visual acuity, and lower values in the group with unchanged or increased visual acuity. Unfortunately, no statistically significant exclusive common laboratory findings for clinical signs of slight or severe rejection were found.

ISSN:0030-3755    

DOI:10.1159/000309954

出版商:S. Karger AG    

年代:1989

数据来源: Karger

摘要:

We developed a new method for specimen preparation for transmission electron-microscopic study of cellular responses on intraocular lenses. This procedure omits propylene oxide treatment of the materials to be studied, which is normally a step in the routine preparation process for transmission electron microscopy. It was previously found that propylene oxide treatment dissolves intraocular lenses. Using our procedure, two types of cells were identified on intraocular lenses removed from monkey eyes 7 days after implantation. These cells had the typical structural features of multinucleated giant cells and of macrophages. It thus appears that this procedure will permit study of the cytology of intraocular lens surfaces.

ISSN:0030-3755    

DOI:10.1159/000309955

出版商:S. Karger AG    

年代:1989

数据来源: Karger

摘要:

Silicone oil injection followed by retinotomy was performed in a second series of 37 patients with retinal detachment and advanced proliferative vitreoretinopathy. The retina posteriorly to the retinotomy was attached in 16 eyes with at least 18 months of follow-up. Ambulatory vision or better vision was restored in 12 eyes. The size and the site of the retinotomy depend on the size and the site of the retraction.

ISSN:0030-3755    

DOI:10.1159/000309956

出版商:S. Karger AG    

年代:1989

数据来源: Karger

摘要:

This study was undertaken in order to evaluate the range of the neuroretinal rim area in a normal sample and the repeatability of manual photogrammetric measurements. Thirty randomly chosen eyes from 30 subjects without ocular disease were examined: the mean disc area (2.20 ± SD 0.58 mm2), the mean cup area (0.36 ± 0.29 mm2) and the mean rim area (1.83 ± 0.37 mm2) were evaluated. All the measurements were performed by two independent observers and were corrected to the actual size by measuring refraction and axial length of each eye. A linear correlation among disc areas (r=0.71), cup areas (r=0.93) and rim areas (r=0.74) between the two observers was found. Furthermore, a highly significant correlation between disc area and rim area was observed (r=0.90) together with a correlation between the disc and cup area (r=0.82). A correlation between disc area and axial length was finally found (r=0.59). The neuroretinal rim area has been expressed as a percentage of the total disc area. Percent values ( ± SD) were clustered around a mean of 84.83 ± 8.8%. Despite their high degree of repeatability, our data are slightly different from those previously reported by other authors.

ISSN:0030-3755    

DOI:10.1159/000309957

出版商:S. Karger AG    

年代:1989

数据来源: Karger

摘要:

Length-tension diagrams of 6 medial rectus muscles, previously submitted to a posterior fixation suture (fadenoperation), were compared to 6 unoperated medial rectus muscles. Both sets of patients presented a nonaccommodative convergence excess esotropia, uncontrolled by conservative treatments (full refraction and progressive addition lenses or bifocals). No changes were found in primary length or spring constant in the muscles operated on with a bridge suture technique (Castiella), in contrast with a marked stiffening appearing in the muscles operated on following Cüppers’ original techniq

ISSN:0030-3755    

DOI:10.1159/000309958

出版商:S. Karger AG    

年代:1989

数据来源: Karger

摘要:

Accuracy of saccades toward a remembered target positions in the dark (memory-guided saccades) was studied in 11 normal subjects. The subjects were instructed to execute saccades with amplitudes of 20, 40, 60, and 80°, centering on the primary position. Saccades were initially performed for 30 s with visual fixation targets. The targets were then switched off. The subjects continued saccades in the dark with the given amplitude. Most memory-guided saccades overshot the target. Saccades with an amplitude error of 12.7 ± 7.3° (mean ± SD) were followed by corrective saccades, while no corrective saccades occurred following saccades with an error of 4.3 ± 4.0°. The accuracy of initial memory-guided saccades decreased with time. However, the amplitude of the memory-guided saccades was corrected when the error was beyond about 5°. These results suggest that memory-guided saccades are not repetitions of visually guided saccades, but nonvisual error signals relate to the control of eye movements in the dark.

ISSN:0030-3755    

DOI:10.1159/000309959

出版商:S. Karger AG    

年代:1989

数据来源: Karger