This cancer is the most common one of childhood, and, only, few cases of retinoblastoma in adults (aged 20 y and older) have been reported in the literature.
Ninety percent of all retinoblastoma cases are diagnosed within the first three years of the child's life.
Children with a family history (10% of cases) of this cancer are typically diagnosed at four months of age.
Those without family history (90% of cases) are usually diagnosed at age of one or two years.
Besides retinoblastoma, there are few others conditions that can cause white reflex pupil (cataract, retinal detachment, retinopathy of prematurity, retinal malformation, intraocular infection, retinal vascular abnormality), and they all need medical attention.
Since when you are experiencing partial blindness?