Abnormal Size Of The Palpebral Fissures C4021904
An abnormal size of the eye opening between the eyelids, which may occur alone or as part of various genetic conditions. Treatment depends on the underlying cause.
Key facts at a glance
- ICD-10
- H53.9
- ICD-11
- 9A00.0
- Body system
- ophthalmologic
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Generalized symptoms
(ophthalmologic)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Small palpebral fissures
(ophthalmologic)Large palpebral fissures
(ophthalmologic)Exposure keratopathy
(ophthalmologic)Tearing
(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
Blepharoplasty
Surgical procedure to correct the size and function of palpebral fissures by removing excess tissue or reconstructing the eyelid structure. This is typically performed by an oculoplastic surgeon.
Exercise prescription and weight management
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Botulinum Toxin Injection
Targeted injection to relax specific muscles around the eye, adjusting palpebral fissure size for functional or cosmetic purposes. Effects are temporary and require repeat treatments.
Additional treatment options
Ophthalmology Follow-up
Regular eye examinations to monitor changes in palpebral fissure size, assess visual function, and determine if intervention is needed. Includes measurement of fissure dimensions and visual acuity testing.
monitoringCosmetic Counseling
Psychological support and counseling for patients concerned about the cosmetic appearance of abnormal palpebral fissures. Helps address body image concerns and provides realistic expectations.
psychologicalProtective Eye Care
Implementation of daily eye protection measures including artificial tears, protective eyewear, and proper eyelid hygiene to prevent complications from abnormal fissure exposure.
lifestyleWhen 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 Abnormal Size Of The Palpebral Fissures C4021904?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy