{"id":7232,"date":"2023-09-12T10:22:27","date_gmt":"2023-09-12T10:22:27","guid":{"rendered":"https:\/\/www.kauveryhospital.com\/ima-journal\/?p=7232"},"modified":"2025-04-09T11:13:59","modified_gmt":"2025-04-09T11:13:59","slug":"a-link-between-the-eye-the-brain-an-interesting-case-report","status":"publish","type":"post","link":"https:\/\/www.kauveryhospital.com\/ima-journal\/ima-journal-september-2023\/a-link-between-the-eye-the-brain-an-interesting-case-report\/","title":{"rendered":"A Link between the Eye &#038; the Brain &#8211; An Interesting Case Report"},"content":{"rendered":"<p class=\"caps\">[vc_row][vc_column][vc_column_text]<\/p>\n<h2><strong>Abstract<\/strong> :<\/h2>\n<p style=\"text-align: justify;\">We report a case of a young female who presented to emergency department with rapidly developing visual deficits in the form of hemianopia.\u00a0 Her NIHSS score was 2\/42. She was thrombolysed with tenecteplase and she showed good improvement in her neurological symptoms.\u00a0 Thrombolysis in very low NIHSS Score (0\/1) is associated with increased risk of bleed and lower rate of excellent outcome.\u00a0 Thrombolysis in low NIHSS score (2-5) is associated with early neurological deterioration but with excellent outcome at 3 months.\u00a0 This patient is presented for the excellent neurological outcome she had because of thrombolysis, though her NIHSS score was low.<\/p>\n<h2><strong>Case report<\/strong> :<\/h2>\n<p style=\"text-align: justify;\">A 39-year lady presented to emergency department of Kauvery hospital with H\/O sudden onset giddiness associated with Right eye blurring of vision. She also had headache and 1 episode of non-projectile and non-bilious vomiting. The patient was initially evaluated at an Eye hospital, and she was diagnosed with right eye Homonymous Hemianopia with normal fundus.<\/p>\n<h2><strong>Past medical history<\/strong>:<\/h2>\n<p>She is a known case of\u00a0\u00a0 Migraine with frequent episodes ,2-3 episodes\/week.<\/p>\n<p>On initial evaluation at ER:<\/p>\n<p><u>Airway: <\/u><\/p>\n<p>Patent and self-maintained<\/p>\n<p><u>Breathing<\/u>:<\/p>\n<p>RR 18\/min, SPO2 99% in RA, B\/L Air entry equal NVBS<\/p>\n<p><u>Circulation:<\/u><\/p>\n<p>PR 90\/min, BP 130\/80mmhg,<\/p>\n<p>CVS- S1S2 normal, no murmur, JVP-Normal,<\/p>\n<p>P\/A- Soft, non-tender, no organomegaly, bowel sounds heard<\/p>\n<p><u>Disability<\/u>:<\/p>\n<p>GCS was 15\/15, CBG 111mg\/dl<\/p>\n<p>Right eye homonymous hemianopia<\/p>\n<p>B\/L Pupil 3mm RTL, no nystagmus, HMF\/CN- normal,<\/p>\n<p>speech &#8211; normal, Power all 4 limbs 5\/5, \u00a0DTR++ all 4 limbs, EOM- \u00a0No Gaze Palsy, B\/L Plantar reflex+.<\/p>\n<p><u>Exposure<\/u>:<\/p>\n<p>Temp &#8211; nil significant<\/p>\n<p>Her NIHSS Score was 2\/42. She was rapidly mobilised for MRI.<\/p>\n<p>Her DWI images (Fig:2) revealed diffusion restriction in left occipital and posterior temporal lobe(PCA territory).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-7234 alignnone\" src=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/New-Project-12.jpg\" alt=\"\" width=\"283\" height=\"285\" srcset=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/New-Project-12.jpg 283w, https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/New-Project-12-150x150.jpg 150w\" sizes=\"auto, (max-width: 283px) 100vw, 283px\" \/><\/p>\n<p><em><strong>Fig:1- T2 MRI BRAIN Normal<\/strong><\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-7235 alignnone\" src=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/fig-2-1.jpg\" alt=\"\" width=\"271\" height=\"233\" \/><\/p>\n<p><em><strong>Fig:2 DWI &#8211; occipital lobe Diffusion Restricted<\/strong><\/em><\/p>\n<p style=\"text-align: justify;\">In view of young age and CVA in window period and in spite of low NIHSS score it was decided to thrombolyse the patient weighing the risk benefit ratio.\u00a0 After written consent she was given a dose of Tenecteplase (0.25mg\/kg) (16mg) in MRI console. After 24 hours of thrombolysis repeat CT Brain done showed no evidence of bleed (Figure:3).Patient reviewed after a week and\u00a0 her visual field had improved Significantly.<\/p>\n<p><em><strong><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-7236 alignnone\" src=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/ima-5-fig-300x274.jpg\" alt=\"\" width=\"300\" height=\"274\" srcset=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/ima-5-fig-300x274.jpg 300w, https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/ima-5-fig.jpg 415w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/strong><\/em><\/p>\n<p><em><strong>Figure 3 . Post thrombolysis CT brain showing no haemorrhage<\/strong><\/em><\/p>\n<h2><strong>DISCUSSION:<\/strong><\/h2>\n<p>Posterior cerebral stroke is a common cause of homonymous hemianopia and other neurological deficit and associated with more proximal ischemia in vertebrobasilar circuit.<\/p>\n<p>Symptoms associated with PCA stroke like diplopia, visual field defect, dysphagia, vertigo, alteration in consciousness, memory impairment or reading difficulty may help us to understand the location of stroke.<\/p>\n<p><strong><em>1.Why PCA stroke cause homonymous hemianopia?<\/em><\/strong><\/p>\n<p>Unilateral infarction of occipital lobe causes contralateral homonymous hemianopia with macular sparring. Calcarine cortex is supplied by posterior cerebral artery.<\/p>\n<p>PCA has four segment P1 to P4 (figure 4). Proximal obstruction in PCA will cause infarct in thalamus, posterior temporal lobe and occipital lobe . Distal obstruction will cause pure occipital lobe infarct. (Figure 5) FIGURE\u00a0 4: PCA branches<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-7237 alignnone\" src=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/ima-5-300x267.jpg\" alt=\"\" width=\"300\" height=\"267\" srcset=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/ima-5-300x267.jpg 300w, https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/ima-5.jpg 335w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><strong><em>2. How common is hemianopia in PCA stroke?<\/em><\/strong><\/p>\n<p style=\"text-align: justify;\">Studies revealed, with pure PCA stroke 22%\u00a0 presented\u00a0 with hemianopia and 17% with Quandrantanopia. The most common impairment were motor paralysis (65%) and followed by visual defect (54%) , confusion or agitation (45%)<\/p>\n<p style=\"text-align: justify;\">Mechanism of PCA stroke are variable and include large artery disease, Small artery disease, atherothrombosis of PCA, BA, and VA embolism.<\/p>\n<p><strong><em>3. Why thrombolysed with low NIHSS score?<\/em><\/strong><\/p>\n<p style=\"text-align: justify;\">PCA strokes may be underestimated by NIHSS points, when compared to anterior circulation strokes. In this patient with contralateral homonymous hemianopia has\u00a0 only 2 NIHSS points. While patient has a significant infarct in the occipital cortex and thus daily life will be affected drastically. Studies have proven the beneficial effect of thrombolysis in PCA stroke with Low NIHSS to prevent morbidity.<\/p>\n<p><strong>4. <em>Prognosis and treatment of hemianopia in PCA stroke?<\/em><\/strong><\/p>\n<p>Mortality associated with isolated PCA strokes is low, therefore prognosis is good.<\/p>\n<h2><strong>CONCLUSION<\/strong>:<\/h2>\n<p style=\"text-align: justify;\">PCA territory stroke can present with subtle manifestation like hemianopia. If left untreated it can lead to major PCA infarct involving thalamus and brainstem stroke from basilar obstruction. Though NIHSS score may be low and the presentation is subtle PCA strokes can be dangerous. Thrombolysis in spite of low NIHSS score results in better functional outcome and also prevents mortality as in this case.<\/p>\n<h2><strong>REFERENCE <\/strong><\/h2>\n<ol>\n<li style=\"text-align: justify;\">Zhang, Xiaojun MD; Kedar, Sachin MD; Lynn, Michael J MS; Newman, Nancy J MD; Biousse, Val\u00e9rie MD. Homonymous Hemianopia in Stroke. Journal of Neuro-Ophthalmology 26(3):p 180-183, September 2006. | DOI: 10.1097\/01.wno.0000235587.41040.39<\/li>\n<li style=\"text-align: justify;\">Appelros P, Karlsson GM, Seiger A, Nydevik I. Prognosis for patients with neglect and anosognosia with special reference to cognitive impairment. Journal of Rehabilitation Medicine. 2003 Nov;35(6):254-258. DOI: 10.1080\/16501970310012455. PMID: 14664314.<\/li>\n<li style=\"text-align: justify;\">Natale N, Petit R, Champane J, Rodriguez C, Ladna J, Savu C. A Rare Presentation of Posterior Cerebral Artery Stroke With Monocular Hemianopia After Diesel Exposure. Cureus. 2021 May 12;13(5):e14977. doi: 10.7759\/cureus.14977. PMID: 34131529; PMCID: PMC8195542.<\/li>\n<\/ol>\n<p>[\/vc_column_text][vc_row_inner][vc_column_inner][vc_column_text]<strong><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-7365 size-thumbnail\" src=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/Dr.-Sangavi-1-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" srcset=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/Dr.-Sangavi-1-150x150.jpg 150w, https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/Dr.-Sangavi-1.jpg 280w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/>Dr. Sangavi<\/strong><br \/>\n<em>1st Year Emergency Medicine Resident<\/em><br \/>\nKauvery Hospital Chennai[\/vc_column_text][vc_separator color=&#8221;white&#8221;][vc_column_text]<img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-3101 size-thumbnail\" src=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2021\/08\/Dr-Aslesha-Vijaay-Sheth-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" srcset=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2021\/08\/Dr-Aslesha-Vijaay-Sheth-150x150.jpg 150w, https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2021\/08\/Dr-Aslesha-Vijaay-Sheth.jpg 200w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><strong>Dr. Aslesha Vijaay Sheth<\/strong><br \/>\n<em>Consultant &amp; Clinical Lead, Emergency Medicine<\/em><br \/>\nKauvery Hospital Chennai[\/vc_column_text][vc_separator color=&#8221;white&#8221;][vc_column_text]<img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-7309 size-thumbnail\" src=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/Dr.Vidya_-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><strong>Dr. Vidya Saketharaman<\/strong><br \/>\n<em>Consultant Emergency Care Physician<\/em><br \/>\nKauvery Hospital Chennai[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_column_text] Abstract : We report a case of a young female who presented to emergency department with rapidly developing visual deficits in the form of hemianopia.\u00a0 Her NIHSS score was<\/p>\n","protected":false},"author":2,"featured_media":7233,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[57],"tags":[],"class_list":["post-7232","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ima-journal-september-2023"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.0 - 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