i was just reading some random page about albinos and pastel sliders. this was about some pastels "Many pastel Sliders have asymmetries and defects that suggest either incubation at inadeguate temperatures or the expression of recessive genes. Examples include asymmetry of shell pattern and/or scutes, reduced size of one or both eyes"
my turtle has asymmetrical scutes too and the reduced size of both eyes. he also has a really tiny tail that curls. i think he's just a genetic freak.