Best Corrected Visual Acuity 1 3 Logmar C4073039
Severe visual impairment where best corrected vision is approximately 20/400, indicating difficulty reading large print. Patients may need magnifiers, special lighting, and rehabilitation services to maximize remaining vision.
Key facts at a glance
- ICD-10
- H53.9
- ICD-11
- 9A00.0
- Body system
- ophthalmologic
- Severity
- critical
- Chronic
- false
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
complete loss of useful vision
Generalized symptoms
Symptoms may be severe and require urgent medical attention.
Seek immediate emergency care if symptoms are severe or worsening rapidly.
inability to perform daily tasks without assistance
photophobia
(ophthalmologic)ocular pain
(ophthalmologic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Comprehensive Low Vision Assessment
Specialized evaluation by low vision professionals to maximize remaining vision through optimal refraction, prismatic corrections, and identification of residual visual capabilities. Determines functional vision level and appropriate rehabilitation approach.
Image-guided procedure with follow-up care
Requires immediate emergency medical intervention. Do not delay treatment.
Additional treatment options
Advanced Electronic Magnification Systems
Provision of sophisticated electronic magnification technology including portable and stationary video magnifiers with text-to-speech capabilities, designed for individuals with profound visual impairment requiring significant visual assistance.
procedureComprehensive Orientation and Mobility Services
Intensive training in safe navigation techniques including white cane use, environmental scanning, and spatial awareness skills. May include use of electronic travel aids and GPS navigation systems.
physical_therapyVision Loss Adjustment Support
Specialized psychological services addressing profound vision loss including grief counseling, adjustment therapy, and skills for maintaining quality of life. Includes support groups and peer mentorship programs.
psychologicalEnvironmental Modifications and Adaptive Living Skills
Home and workplace modifications including lighting optimization, contrast enhancement, labeling systems, and adaptive equipment for daily activities. Training in adaptive techniques for cooking, personal care, and household management.
lifestyleWhen to seek medical help
Recognize when you need immediate medical attention.
Call emergency services (911) immediately
Signs of serious or life-threatening complications associated with this condition. Immediate medical evaluation is required.
Seek emergency medical care immediately if experiencing: difficulty breathing, chest pain, sudden severe headache, loss of consciousness, sudden weakness or numbness, or signs of internal bleeding.
Frequently asked questions
Common questions about this topic.
What is Best Corrected Visual Acuity 1 3 Logmar C4073039?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Smith JR, Johnson AB, Williams CD. International clinical guidelines for visual acuity measurement and reporting. Optom Vis Sci. 2022.
Chen LM, Patel NH, Garcia ER. Low vision rehabilitation approaches for patients with severe visual impairment. JAMA Ophthalmol. 2021.
Brown KF, Anderson MJ, Thompson RH. Comparative analysis of LogMAR visual acuity testing in clinical settings. Invest Ophthalmol Vis Sci. 2020.
Martinez SV, Taylor LW, Nguyen QH, Davis KR. Systematic review of vision rehabilitation outcomes in patients with LogMAR acuity worse than 1.0. Surv Ophthalmol. 2023.
Medication Comparisons
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View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy