scholarly journals VISUAL FIELD DEFECTS;

2017 ◽  
Vol 24 (10) ◽  
pp. 1527-1533
Author(s):  
Muhammad Khalid ◽  
Mehwish Aslam ◽  
Umer Farooq Raina ◽  
Khaleeq UZ Zaman
Keyword(s):  
Visual Field ◽  
Adult Population ◽  
Case Series ◽  
Female Gender ◽  
Visual Field Defects ◽  
International Studies ◽  
Case Series Study ◽  
Computerized Perimetry ◽  
Series Study ◽  
Field Defects

Objectives: To obtain and compare the exact visual status before and afterexcision of sella supra sellar tumors using the computerized perimetry as a standard measuringtools and then compare with the international studies. Background: Sella suprasellar tumorsare though not so common but affect visual acuity of patients and their quality of life drops.These tumors include pituitary adenoma commonest in the adult population, meningioma,Craniopharyngioma, astrocytic glioma, Optic nerve Glioma, Germinoma, Dermoid, Pituitarymetastases. We planned a descriptive case series study to compare the pre and post excisionvisual field defects using computerized perimetry. Study Design: Case series study. Setting:Department of Neurosurgery, Pakistan Institute of Medical Sciences, SZABMU, and Islamabad.Period: 2 years from January 2015 to December 2016. Methods: A total of 73 patients withsella suprasellar tumors were identified and enrolled. Patients between the age of 10 and55 years were selected on the basis of having sella supra sellar tumor on CT/MRI brain withcontrast. Patients whose age was less than 10 years and more than 55 years were excluded.Moreover, patients with post radiation necrosis diagnosed on MRI and MR spectroscopy brain,those operated for other eye pathology and patients with sella supra sellar SOL having comorbiditieslike diabetes mellitus, hypertension etc. were also excluded from the study. Thestudy outcome was measured in terms of comparison of visual field defects after excision ofsella suprasellar tumors using computerized perimetry. Results: The average age of patientswas 42.1 + 6.8 years ranging from 10 to 55 years. Female gender was predominant; therewere 40 (54.8%) female patients. The mean computerized perimetry was 0.65 + 0.34 LogMARbefore surgery which improved to 0.19 + 0.12 LogMAR after surgery. Overall, of the 73 cases,63 (86.4%) had improvement whereas 10 (13.6%) study cases had no improvement in thevisual field on follow-up. Conclusion: It can be concluded that after craniotomy and excisionof sella suprasellar tumors, perimetry showed improvement in the majority of the study cases.

Normal visual fields as assessed by computerized static threshold perimetry in patients with untreated primary hypothyroidism

1989 ◽  
Vol 121 (4) ◽  
pp. 495-500 ◽  
Author(s):  
Bengt Hallengren ◽  
Per Manhem ◽  
Margareta Bramnert ◽  
Inga Redlund-Johnell ◽  
Anders Heijl
Keyword(s):  
Visual Field ◽  
Prospective Study ◽  
Visual Fields ◽  
Primary Hypothyroidism ◽  
Common Finding ◽  
Visual Field Defects ◽  
Computer Assisted ◽  
Computerized Perimetry ◽  
Assisted Analysis ◽  
Field Defects

Abstract. In this prospective study, 25 consecutive patients with untreated primary hypothyroidism were tested with a highly sensitive perimetric technique, since a high prevalence of visual field defects has been described in this condition. All patients had clinical hypothyroidism, a serum TSH value > 20 mU/l (reference range 0.4–4.0) and decreased/low normal serum total T4 concentration. Visual fields were tested with fully automated threshold-measuring computerized perimetry of the central 30 degrees field. Interpretation of fields included computer-assisted analysis provided by a perimetric statistical programme package. In 23 patients, conventional inspection and computer-assisted analysis showed no visual field defects. Two patients were excluded from the latter analysis: one patient who did not respond adequately at computerized perimetry and in whom manual field tests were entirely normal; one patient who had low sensitivity values in the uppermost parts of both visual fields owing to markedly swollen upper eye lids. In conclusion, although pituitary hyperplasia has been well documented in primary hypothyroidism, the present prospective study clearly indicates that visual field defects are not a common finding in patients with this disease.

Topiramate Induced Visual Field Defects: a Case Series

Drug Safety ◽  
2006 ◽  
Vol 29 (10) ◽  
pp. 911-1010 ◽  
Author(s):  
S. Chatterjee ◽  
A. Mandal ◽  
G.K. Ganguly ◽  
S. Bose
Keyword(s):  
Visual Field ◽  
Case Series ◽  
Visual Field Defects ◽  
Field Defects

scholarly journals Vessel Density and Vessel Tortuosity Quantitative Analysis of Arteritic and Non-arteritic Anterior Ischemic Optic Neuropathies: An Optical Coherence Tomography Angiography Study

2020 ◽  
Vol 9 (4) ◽  
pp. 1094 ◽  
Author(s):  
Luisa Pierro ◽  
Alessandro Arrigo ◽  
Emanuela Aragona ◽  
Michele Cavalleri ◽  
Francesco Bandello
Keyword(s):  
Optical Coherence Tomography ◽  
Visual Field ◽  
Optical Coherence Tomography Angiography ◽  
Case Series ◽  
Vessel Density ◽  
Visual Field Defects ◽  
Quantitative Detection ◽  
Optical Coherence ◽  
Vessel Tortuosity ◽  
Field Defects

The aim of this study was to perform quantitative optical coherence tomography angiography (OCTA) assessment of arteritic and non-arteritic anterior ischemic optic neuropathies (AION; NAION). The study was designed as an observational, cross-sectional case series. All patients underwent complete ophthalmologic evaluation including LogMAR best-corrected visual acuity (BCVA), structural optical coherence tomography (OCT) and OCTA images, and dye-based angiography. Retinal nerve fiber layer (RNFL) thickness was obtained from structural OCT, and vessel density (VD) and vessel tortuosity (VT) were measured for each optic nerve head vascular plexus. After selecting the quadrants showing visual field defects, measured by Humphrey 30.2 perimetry (Zeiss Meditec, Dublin, CA, USA), we assessed the correlation between the localization of visual field defects and the quadrants showing impairments of RNFL, VD, and VT. Thirty naïve AION patients (15 arteritic AION (AAION) and 15 non-arteritic AION (NAION)) were included. LogMAR BCVA was 0.6 ± 0.2 for AAION and 0.3 ± 0.3 for NAION (p < 0.01). AAION and NAION eyes showed significant differences in terms of visual field involvement as well as VD and VT values, with remarkably worse alterations affecting AAION eyes. VD values perfectly matched with the quadrants showing RNFL and visual field defects. On the contrary, VT resulted remarkably decreased in all the quadrants, with even worse values in the quadrants showing RNFL and visual field alterations. The present study showed that AAION eyes are more injured than NAION ones. VD represents a good parameter for the detection of the main site on vascular impairment. Remarkably, VT resulted in a more sensitive parameter for the quantitative detection of blood flow impairment in AION disease.

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