Appaloosas that are homozygous for the leopard complex (LP) gene are also at risk for congenital stationary night blindness (CSNB). This form of night blindness has been linked with the leopard complex since the 1970s, and in 2007 a "significant association" between LP and CSNB was identified. CSNB is a disorder that causes an affected animal to lack night vision, although day vision is normal. It is an inherited disorder, present from birth, and does not progress over time. Studies in 2008 and 2010 indicate that both CSNB and leopard complex spotting patterns are linked to TRPM1.
Appaloosas that are homozygous for the leopard complex (LP) gene are also at risk for congenital stationary night blindness (CSNB) This form of night blindness has been linked with the leopard complex since the 1970s and in 2007 a "significant association" between LP and CSNB was identified CSNB is a disorder that causes an affected animal to lack night vision although day vision is normal It is an inherited disorder present from birth and does not progress over time Studies in 2008 and 2010 indicate that both CSNB and leopard complex spotting patterns are linked to TRPM1