Low blue sensitivity may be due to the eye's lens being opaque to UV (very bright blue). This is for good reasons because then daylight illumination would be painful and cause retinal damage over time.
The blue color receptor can actually capture a wider range blues and low UV shades. People who had cataract surgery (which replaces the defective lens with an artificial one) may see into these deeper shades of blue if they received an older style of implant.
The blue color receptor can actually capture a wider range blues and low UV shades. People who had cataract surgery (which replaces the defective lens with an artificial one) may see into these deeper shades of blue if they received an older style of implant.
http://www.guardian.co.uk/science/2002/may/30/medicalscience...