: 100, 1513 The disability rights critique of prenatal screening for OI, held by some bioethicists and some affected individuals, negatively compares it to eugenics, with even those not opposed to abortion opposing selective abortions on the ethical ground that their existence betrays the belief that the lives of those with OI are "less worth living [and] less valuable". : 388

Prognosis
The prognosis of osteogenesis imperfecta depends entirely on its type (see § Classification). Life expectancy
In the mild form of the disorder, type I, the life expectancy of patients is near that of the general population. : 461  In type II, however, patients only very rarely live past the age of two, and typically die in their first weeks of life. : 1511  Assessment of the life expectancy of patients with types III and IV is more complicated, as lifestyle choices can cause fatally traumatic injuries that would not have otherwise occurred, or not been fatal in the general population. Life expectancy in type IV OI is thought to be close to normal, but in type III it is lower than in the general population.A 2016 study of data in Denmarks National Patient Register found that across all types of OI, all-cause mortality was three times higher, leading to a loss of around seven years in females and nine years in males.
It carries a quite small risk of central retinal artery obstruction, focal depigmentation in dark-skinned patients, and inadvertent ocular penetration. It is considered a simple and effective treatment option, one with high success rates. It may give the same results as surgical treatment (I&C). Larger, long-standing lesions are best treated surgically. Considering the surgical risks, steroid injection is believed to be a safer procedure in marginal lesions and lesions close to lacrimal punctum.One injection alone has a success rate of about 80%; if requested, a second injection can be given 1–2 weeks later. Carbon dioxide laser
Chalazion excision using a CO2 laser is also a safer procedure, with minimal bleeding and no eye patching  required. See also
Stye

References
External links

 Media related to Chalazion at Wikimedia Commons