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This letter discusses a case study of a 50-year-old woman with breast cancer who developed a choroidal metastasis in her left eye. Systemic chemotherapy was ineffective at controlling the growth of the choroidal lesion. She received an intravitreal injection of bevacizumab, which led to significant regression of the choroidal tumor over a 6 month period with no recurrence over 24 months of follow up. The letter suggests intravitreal bevacizumab may be an effective treatment for choroidal metastases when systemic chemotherapy proves insufficient.
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This document is a near vision test chart that contains lines of progressively smaller letters labeled with visual acuity measurements ranging from 20/200 to 20/20. The 20/20 line contains the smallest 3 point type text that a person with normal vision can read from a distance of 35 cm, indicating excellent close-up visual acuity.
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Acta
This letter discusses a case study of a 50-year-old woman with breast cancer who developed a choroidal metastasis in her left eye. Systemic chemotherapy was ineffective at controlling the growth of the choroidal lesion. She received an intravitreal injection of bevacizumab, which led to significant regression of the choroidal tumor over a 6 month period with no recurrence over 24 months of follow up. The letter suggests intravitreal bevacizumab may be an effective treatment for choroidal metastases when systemic chemotherapy proves insufficient.
近距離視力表
This document is a near vision test chart that contains lines of progressively smaller letters labeled with visual acuity measurements ranging from 20/200 to 20/20. The 20/20 line contains the smallest 3 point type text that a person with normal vision can read from a distance of 35 cm, indicating excellent close-up visual acuity.
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The document discusses anatomy and diseases of the eye. It describes the layers of the eyeball including the uvea and sclera. Various types of uveitis are classified and their symptoms, signs, etiologies, and treatments are explained. Specific uveitic entities like HLA-B27 associated uveitis, sarcoidosis, and toxoplasmosis are also summarized along with their diagnostic approach and management. Uveal tumors and scleral diseases are briefly covered as well.
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Clinical laboratory basic
The clinical lab provides diagnostic test data to aid in the detection, diagnosis and treatment of disease. The lab is responsible for correct identification, collection and processing of patient specimens, accurate performance of testing, timely reporting of results, and communication with healthcare professionals. There are six main steps in how a sample flows through the lab: 1) test is ordered, 2) sample is collected, 3) sample is delivered to the lab, 4) sample is processed, 5) sample is analyzed, and 6) results are reported. Common specimen types include blood, urine, body fluids, sputum, stool, and tissue samples.
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This document discusses hearing and assistive devices, from hearing aids to electronic ears. It begins by explaining the auditory system as an energy transformation system, where acoustic energy is transformed into mechanical, hydraulic, and bioelectric energy as it travels through the outer, middle, and inner ear. It then provides detailed descriptions of the anatomy and functions of the outer, middle, and inner ear. It also discusses various physical properties of sound including frequency, wavelength, amplitude, interference, resonance, and more. The document is an in-depth overview of the human auditory system and how assistive devices can help with hearing impairments.
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The document provides information about cochlear implants, including:
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The document discusses anatomy and diseases of the eye. It describes the layers of the eyeball including the uvea and sclera. Various types of uveitis are classified and their symptoms, signs, etiologies, and treatments are explained. Specific uveitic entities like HLA-B27 associated uveitis, sarcoidosis, and toxoplasmosis are also summarized along with their diagnostic approach and management. Uveal tumors and scleral diseases are briefly covered as well.
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