- Commonly seen in patients with galactosemia (a recessively inherited inborn error of carbohydrate metabolism).
- Accumulation of dulcitol (galactose reduction product) within the lens cells leads to increased intracellular osmotic pressure and fluid influx into the lens.
- Symptoms: decreased vision depends on the severity of the cataract
- Bilateral lens changes
- Zonular or nuclear opacity with increased refractive power of the nuclear portion causes an "oil droplet" appearance on retroillumination
- Lenticular myopia
- May progress to total opacification of the lens if the systemic condition is left untreated
- Remove galactose from the diet
- Avoid all milk products to prevent the progression of cataract and mental retardation.