Evaluation and Treatment Approach for Bluish Sclera

Diagnostic Evaluation

A family history of multiple fractures, early-onset hearing loss, abnormally developed dentition, blue sclera, and short stature suggests OI, according to the American Academy of Pediatrics 1
Past medical history, including pregnancy and birth history, history of total parental nutrition, hepatobiliary disease, diuretic therapy, hypercalciuria, or corticosteroids, is relevant in the diagnostic evaluation of blue sclera, as recommended by the American Academy of Pediatrics 1
A comprehensive physical examination, including assessment for signs of fractures, growth parameters, skin examination for bruising, dental abnormalities, and hair abnormalities, is essential in the diagnostic evaluation of blue sclera, as suggested by the American Academy of Pediatrics 1
Evaluation for other ocular abnormalities is necessary in the diagnostic evaluation of blue sclera, according to the American Academy of Ophthalmology 2

Serum calcium, phosphorus, and alkaline phosphatase levels, as well as urinary calcium excretion, should be considered in the diagnostic evaluation of blue sclera, as recommended by the American Academy of Pediatrics 1
Radiographic studies to evaluate for fractures or bone abnormalities may be indicated in the diagnostic evaluation of blue sclera, according to the American Academy of Pediatrics 1

In children with fractures and blue sclera, careful evaluation is needed to distinguish OI from non-accidental injury, as emphasized by the American Academy of Pediatrics 1
Corticosteroids may be used in the treatment of non-infectious scleritis associated with blue sclera, as suggested by the American Academy of Pediatrics 1

Blue sclera is primarily caused by osteogenesis imperfecta (OI), but can also be associated with other genetic syndromes, metabolic disorders, and certain systemic diseases 3, 4

Blue sclera is a characteristic clinical feature of OI, particularly in types I, III, IV, and VII 3, 4, 5

Ehlers-Danlos syndrome (vascular form/type IV) is characterized by thin skin, easy bruising, and blue sclera 6
Loeys-Dietz syndrome features include blue sclera, arterial tortuosity, and hypertelorism 6
Hypophosphatasia is characterized by defective bone mineralization and blue sclera 3, 7
Hypophosphatemic osteomalacia ("rickets") can present with blue sclera, osteomalacia, and poor growth 8
Blue sclerae can occur in normal infants before 12 months of age 4, 9
Preterm birth is associated with decreased bone mineralization that may contribute to blue sclera 3

In infants with unexplained fractures, the presence of blue sclera may suggest OI rather than non-accidental injury 4, 10
When evaluating a child with fractures and blue sclera, additional features such as family history of fractures, hearing loss, abnormal dentition, and short stature should be assessed 10
Genetic testing for COL1A1/COL1A2 mutations is recommended when OI is suspected 4, 5
Biochemical testing including serum calcium, phosphorus, alkaline phosphatase, and vitamin D levels can help rule out metabolic bone disorders 10

The American College of Medical Genetics and Genomics notes that blue sclerae are a characteristic and common finding in Osteogenesis Imperfecta, particularly types I, III, and VII, while Ehlers-Danlos Syndrome typically does not present with blue sclerae except rarely in the vascular type, with a strength of evidence based on clinical observations 11, 12
Blue sclerae are present in all children with OI type I and can be dramatic in presentation, according to the American Academy of Pediatrics 11
OI type III shows variable scleral hue, while OI type VII characteristically presents with blue sclerae, as reported by the American College of Medical Genetics and Genomics 11, 13
OI type IV typically has normal sclerae, which is an important distinguishing feature within OI subtypes, noted by the American Academy of Pediatrics 11, 13

When evaluating a patient with suspected connective tissue disorder, the American Academy of Pediatrics recommends considering that infants with OI types IV, V, and VI may have normal sclerae and present only with fractures 11, 13
The American Academy of Pediatrics suggests assessing for the complete constellation of features: in OI, look for fractures, short stature, dentinogenesis imperfecta, and hearing loss; in EDS, look for joint hypermobility, skin hyperextensibility, and vascular fragility 12
The American College of Medical Genetics and Genomics recommends performing genetic testing for COL1A1/COL1A2 mutations to confirm OI diagnosis, with a strength of evidence based on genetic studies 11, 13

Normal or near-normal stature is observed in approximately two-thirds of patients with osteogenesis imperfecta (OI) type I, according to the American College of Medical Genetics and Genomics 14
Biochemical collagen testing from cultured skin fibroblasts may be considered if genetic testing is inconclusive and clinical suspicion of OI remains high, as recommended by the American College of Medical Genetics and Genomics 14
Hypophosphatasia is a metabolic bone disorder that presents with blue sclera, defective bone mineralization, elevated urinary phosphoethanolamine, and low serum alkaline phosphatase, as described by the American College of Medical Genetics and Genomics 14
The presence of blue sclera beyond infancy is a pathologic finding that requires investigation, and the American Academy of Pediatrics recommends a thorough evaluation to determine the underlying cause 14