scholarly journals Field changes on automated Humphrey’s field analyzer in tuberculosis following ethambutol therapy

2022 ◽  
Vol 7 (4) ◽  
pp. 717-722
Author(s):  
Poorva Shrivastava ◽  
Sheetal Morskole ◽  
Lalit Shrivastava
Keyword(s):  
Visual Acuity ◽  
Visual Field ◽  
Tertiary Care ◽  
Visual Field Defects ◽  
Significant Deterioration ◽  
Irreversible Damage ◽  
Vision Defects ◽  
Initiation Of Therapy ◽  
Anti Tubercular Therapy ◽  
Field Defects

This study was conducted to evaluate the visual field changes in tubercular patients on anti-tubercular therapy and to assess the reversibility of these changes after the discontinuation therapy. This study was conducted as a prospective analytical study at tertiary care centres in Bhopal and Jabalpur on all newly detected tuberculosis patients. Ocular history, relevant history was recorded and detailed ocular examination was done at the time of presentation, before initiating ATT. All the patients were followed up periodically till the cessation of treatment and three months thereafter. A total of 40 cases of newly diagnosed tuberculosis were registered with mean age of 38.4±13.99 years. We documented significant deterioration in visual acuity after 3 months of initiation of therapy. Once the ATT was stopped, the improvement in visual acuity was statistically significant 3 months after the cessation of ATT as compared to visual acuity 3 months after initiation of ATT (p<0.05). But residual visual impairment even after stoppage of ATT was observed. Color vison and visual field defects were observed in higher proportions of eyes following initiation of ethambutol which improved significantly after 3 months of cessation of ATT (p<0.05). Ethambutol, even in recommended dose according to DOTS, has been associated with ocular toxicity which manifests in the form of painless progressive loss of vision, color vision defects and visual field defects. Though these changes are usually reversible, few patients have irreversible damage. Thus, patients receiving ethambutol must be explained regarding these effects and followed up periodically.

Neuro-ophthalmology: Disorders of Visual Perception, Pupils, and Eyelids

2021 ◽  
pp. 821-833
Author(s):  
Shivram Kumar ◽  
Kelly D. Flemming
Keyword(s):  
Visual Acuity ◽  
Visual Field ◽  
Visual Perception ◽  
Visual Loss ◽  
Visual Field Defects ◽  
Clinical Disorders ◽  
Physical Findings ◽  
Abnormal Visual ◽  
Visual Changes ◽  
Field Defects

Visual loss may develop acutely, subacutely, or insidiously. The course may be transient, static, or progressive. This chapter reviews the causes, diagnosis, and treatment of various disorders resulting in visual loss or abnormal visual perception. In addition, it reviews clinical disorders of the eyelids and pupils. Disorders of visual perception involve visual acuity, color perception, visual field defects, and other visual changes. Historical information and physical findings on examination can help to localize the problem and define the cause.

scholarly journals Chromatic Pupilloperimetry Measures Correlate With Visual Acuity and Visual Field Defects in Retinitis Pigmentosa Patients

2020 ◽  
Vol 9 (8) ◽  
pp. 10
Author(s):  
Ifat Sher ◽  
Yisroel Tucker ◽  
Maya Gurevich ◽  
Amit Hamburg ◽  
Ettel Bubis ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Visual Field ◽  
Retinitis Pigmentosa ◽  
Visual Field Defects ◽  
Field Defects

Early hydroxychloroquine retinopathy: optical coherence tomography abnormalities preceding Humphrey visual field defects

2019 ◽  
Vol 103 (11) ◽  
pp. 1600-1604 ◽  
Author(s):  
Sean T Garrity ◽  
Joo Yeon Jung ◽  
Olivia Zambrowski ◽  
Francesco Pichi ◽  
Daniel Su ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Visual Field ◽  
Vision Loss ◽  
Tertiary Care ◽  
Fundus Photography ◽  
Visual Field Defects ◽  
Optical Coherence ◽  
Humphrey Visual Field ◽  
Hydroxychloroquine Retinopathy ◽  
Field Defects

Background/AimsHydroxychloroquine (HCQ) retinopathy may result in severe and irreversible vision loss, emphasising the importance of screening and early detection. The purpose of this study is to report the novel finding of early optical coherence tomography (OCT) abnormalities due to HCQ toxicity that may develop in the setting of normal Humphrey visual field (HVF) testing.MethodsData from patients with chronic HCQ exposure was obtained from seven tertiary care retina centres. Ten patients with HCQ-associated OCT abnormalities and normal HVF testing were identified. Detailed analysis of the OCT findings and ancillary tests including colour fundus photography, fundus autofluorescence, multifocal electroretinography and microperimetry was performed in these patients.ResultsSeventeen eyes from 10 patients illustrated abnormalities with OCT and normal HVF testing. These OCT alterations included (1) attenuation of the parafoveal ellipsoid zone and (2) loss of a clear continuous interdigitation zone. Several eyes progressed to advanced parafoveal outer retinal disruption and/or paracentral visual field defects.ConclusionPatients with high risk HCQ exposure and normal HVF testing may develop subtle but characteristic OCT abnormalities. This novel finding indicates that, in some cases of early HCQ toxicity, structural alterations may precede functional impairment. It is therefore important to employ a screening approach that includes OCT to assess for these early findings. Ancillary testing should be considered in cases with suspicious OCT changes and normal HVFs.

Study on the Visual Acuity and Balance Ability in the Elderly without Visual Field Defects

2020 ◽  
Vol 22 (3) ◽  
pp. 349-358
Author(s):  
Ji-Su Pack ◽  
Koon-Ja Lee ◽  
Jeong-Lae Kim ◽  
Se-Hoon Choi ◽  
Hyun-Sung Leem
Keyword(s):  
Visual Acuity ◽  
Visual Field ◽  
The Elderly ◽  
Visual Field Defects ◽  
Balance Ability ◽  
Field Defects

scholarly journals Pattern of Visual Field Defects in Newly Diagnosed Primary Open Angle Glaucoma Patients Attending Tertiary Care Hospital, Kathmandu, Nepal

2020 ◽  
Vol 22 (4) ◽  
pp. 203-210
Author(s):  
Pranisha Singh ◽  
AP Rijal
Keyword(s):  
Visual Field ◽  
Primary Open Angle Glaucoma ◽  
Tertiary Care Hospital ◽  
Open Angle Glaucoma ◽  
Tertiary Care ◽  
Visual Field Defects ◽  
Care Hospital ◽  
Newly Diagnosed ◽  
Field Defect ◽  
Field Defects

The purpose of this study was to evaluate the location and pattern of visual field defects as measured by Humphrey Field Analyzer (HFA 24-2) in newly diagnosed primary open angle glaucoma (POAG) attending tertiary care hospital. This was a cross sectional, descriptive study. One hundred and four eyes of 52 patients who fulfilled the inclusion criteria during one year were included. They were classified as mild, moderate and severe glaucoma according to severity. Paracentral scotoma in superotemporal and superonasal region was the most frequent visual field defect observed in mild glaucoma. Superior arcuate defect and double arcuate defect was commonly seen among moderate and severe stages of POAG respectively. There was a significant association between severity of glaucoma and pattern of visual field defect (p=0.000). The superior hemifield was affected twice more than the inferior hemifield in newly diagnosed cases of POAG.

scholarly journals Modern Technologies in the Examination of Patients with Optic Nerve Atrophy Due to Multiple Sclerosis

2018 ◽  
Vol 15 (2S) ◽  
pp. 246-253 ◽  
Author(s):  
E. E. Ioyleva ◽  
M. S. Krivosheeva ◽  
E. Yu. Markova
Keyword(s):  
Visual Acuity ◽  
Optic Nerve ◽  
Visual Field ◽  
Visual Field Defects ◽  
Functional Disorders ◽  
Optic Nerve Atrophy ◽  
Central Visual Field ◽  
Mean Sensitivity ◽  
Field Defects ◽  
Central Fixation

Purpose: to develop an algorithm for testing patients with optic nerve atrophy due to MS using microperimetry with the different functional disorders.Patients and Methods. There were 20 patients (40 eyes) with the correct diagnosis of MS at the age of 33 ± 1.88 years in the study. The BCVA was from 0.1 to 1.0. Microperimetry was done on MP-1 (Nidek technologies, Vigonza, Italy) with the definition of mean sensitivity, stability and type of fixation. We chose the parameters of microperimetry: the research program, the size of the stimulus, the fixation mark and the test mode.Results. The best program for diagnosing central visual field defects was the program macula 12° 10 dB, for paracentral visual field defects – retina 40° 20 dB. The testing was conducted by using a standard stimulus Goldmann III, mark and survey mode is selected individually, according at the various types of functional disorders. The visual acuity was from 0.1 to 0.4 in 11 eyes with optic nerve atrophy. There were revealed absolute or relative defects of the central field of vision and the decreasing of mean sensitivity to 8.21 ± 2.3 dB, unstable central fixation — 71.18 ± 10, 3%. In 29 eyes with optic nerve atrophy and visual acuity 0.5–1.0 have been identified relative small central visual field defects and paracentral visual field defects in the inferior side with a decrease in sensitivity to 15,32 ± 0,84 dB in the area of 6° from the fixing point, stable central fixation 88,96 ± 2,9%.Conclusion. The authors developed an algorithm for testing patients with optic nerve atrophy due to MS. Using the algorithm identified the central and paracentral visual field defects with the decrease in the mean sensitivity. 

scholarly journals The Association of Visual Impairments of Elite Soccer Players with Concussion and Sports Injuries: A Prospective Cohort Study

2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Bahar Hassanmirzaei ◽  
Farinaz Fahimipour ◽  
Zohreh Haratian ◽  
Navid Moghadam
Keyword(s):  
Visual Acuity ◽  
Cohort Study ◽  
Visual Field ◽  
Sports Injuries ◽  
Soccer Players ◽  
Visual Field Defects ◽  
P Value ◽  
Professional Soccer ◽  
Visual Skills ◽  
Field Defects

Background: Visual skills play a pivotal role in athletic performance. However, in a professional setting, visual assessment is limited to a brief examination of visual acuity by the Snellen chart. This is while visual skills in sport comprise several other components. Objectives: This study aimed to evaluate the potential relationship between visual skills and sports injuries in professional soccer players. Methods: Through a prospective cohort study between September 2017 and October 2018, professional soccer league players were recruited for a complete eye examination including visual acuity, field of vision, and color discrimination as pre-competition examination. Any possible relationship between an abnormal eye finding and sports injury during the upcoming season was investigated. Results: A total of 386 male soccer players in 4 different playing positions were recruited from 16 league teams. Myopia, visual field defects, and green/blue/red color blindness were the most common visual impairments. Overall, there was no significant relationship between abnormal visual skills and the incidence of low back and upper extremity injuries among soccer players. However, a logistic regression model showed that the odds of quadriceps injury is 1.92 times higher (P-value: 0.005) for one diopter increase in both eyes' sum of refractive error. There is also an increased risk of concussion in players who have visual field defects (P-value < 0.005). Conclusions: Visual field defects can put soccer players at a higher risk for concussion. Moreover, uncorrected refractive eye errors will increase the incidence of lower limb injuries, mostly quadriceps injuries.

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