This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Which type of osteogenesis imperfecta is also known as imperfecta with blue sclera? 
Select and explain. 
A. Type 1, B. Type 2, C. Type 3, D. Type 4
A: Type 1
Answer: A: Type 1 
Explanation: Clinical types of osteogenesis imperfecta:

Osteogenesis imperfecta, type I  

Osteogenesis imperfecta tarda 
Osteogenesis imperfecta with blue sclerae 


Osteogenesis imperfecta congenital; type II

Osteogenesis imperfecta congenital, neonatal lethal
Vrolik type of osteogenesis imperfecta


Osteogenesis imperfecta, progressively deforming, with normal sclerae: type III  

Gene map locus 17q21.31-q22,7q22.1


Osteogenesis imperfecta, type IV  

Osteogenesis imperfecta with normal sclerae  



Ref: Shafer's textbook of oral pathology 7th edition page 699