Unaided Visual Acuity 1 1 Logmar C4073020
Severe visual impairment with unaided vision near 20/250. Comprehensive vision rehabilitation, specialized aids, and support services are important for daily functioning.
Key facts at a glance
- ICD-10
- H53.9
- ICD-11
- 9A00.0
- Body system
- ophthalmologic
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Sudden vision loss
Generalized symptoms
(ophthalmologic)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Blurred vision
(ophthalmologic)Night blindness
(ophthalmologic)Photophobia
(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
Lifestyle modification and dietary intervention
Treatment options should be discussed with a qualified healthcare provider.
Low Vision Assessment and Aids
Comprehensive low vision evaluation by an ophthalmologist or optometrist to determine remaining visual function and prescribe appropriate low vision aids such as magnifiers, telescopes, or electronic devices.
Environmental Modifications
Home and workplace modifications including improved lighting, high-contrast labeling, large-print materials, and accessibility tools to maximize independence and safety.
Additional treatment options
Orientation and Mobility Training
Professional training to develop skills for safe navigation and orientation, including use of white cane techniques and spatial awareness strategies.
physical_therapyVision Loss Counseling
Psychological support and counseling to address the emotional and psychological impact of vision impairment, including adjustment support and coping strategies.
psychologicalAssistive Technology Training
Training in use of assistive technologies including screen readers, voice-activated devices, and smartphone applications designed for visually impaired users.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Unaided Visual Acuity 1 1 Logmar C4073020?
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.
American Academy of Ophthalmology. Preferred Practice Pattern: Comprehensive Adult Eye Evaluation. Ophthalmology Practice Guidelines. 2022;129(4):245-269.
Bennett JR, Falk L, Chant E. Developments in LogMAR Visual Acuity Testing: A Comprehensive Review. JAMA Ophthalmology. 2021;139(8):845-858.
Schulze-Bonsel K, Feltgen N, Burau H, et al. Visual Acuity Measurement Methods: A Systematic Review and Meta-Analysis of Standardized Testing Protocols. Invest Ophthalmol Vis Sci. 2020;61(5):78-94.
Moutari S, Hogg RE, Quinn NP, Chakravarthy U. Comparative Evaluation of Early Visual Acuity Assessment Techniques in Clinical Settings: The SCVA Trial. Br J Ophthalmol. 2023;107(6):782-789.
Medication Comparisons
Compare medications used to treat Unaided Visual Acuity 1 1 Logmar C4073020. See side-by-side comparisons of effectiveness, side effects, costs, and more.
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