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Cone-Rod Dystrophy

A rare inherited retinal disorder that damages light-sensing cells, causing vision loss, color deficits, and sensitivity issues over time.

Close up of pink, yellow, and white tulips. The colors are muted and washed out.
Close up of vibrant pink, yellow, and white tulips.
Close up of pink, yellow, and white tulips. The colors are muted and washed out.

Normal vision vs. Cone-Rod Dystrophy

Overview


Cone dystrophy is a general term used to describe a group of rare inherited eye disorders that affect the cone cells of the retina, leading to a variety of symptoms such as decreased visual acuity, impaired color perception (dyschromatopsia), and increased sensitivity to light (photophobia). The exact prevalence of cone dystrophy is unknown, but most sources estimate that it affects approximately 1 in 30,000 individuals in the general population.



Types of CRD


There are two main forms of cone dystrophy: stationary and progressive. In stationary cone dystrophy, symptoms tend to remain stable and are usually present at birth or early childhood. In progressive cone dystrophy, symptoms slowly worsen over time, with the age of onset, progression, and severity varying greatly among individuals, even those with the same type of cone dystrophy.

Overview


Cone dystrophy is a general term used to describe a group of rare inherited eye disorders that affect the cone cells of the retina, leading to a variety of symptoms such as decreased visual acuity, impaired color perception (dyschromatopsia), and increased sensitivity to light (photophobia). The exact prevalence of cone dystrophy is unknown, but most sources estimate that it affects approximately 1 in 30,000 individuals in the general population.



Types of CRD


There are two main forms of cone dystrophy: stationary and progressive. In stationary cone dystrophy, symptoms tend to remain stable and are usually present at birth or early childhood. In progressive cone dystrophy, symptoms slowly worsen over time, with the age of onset, progression, and severity varying greatly among individuals, even those with the same type of cone dystrophy.

Overview


Cone dystrophy is a general term used to describe a group of rare inherited eye disorders that affect the cone cells of the retina, leading to a variety of symptoms such as decreased visual acuity, impaired color perception (dyschromatopsia), and increased sensitivity to light (photophobia). The exact prevalence of cone dystrophy is unknown, but most sources estimate that it affects approximately 1 in 30,000 individuals in the general population.



Types of CRD


There are two main forms of cone dystrophy: stationary and progressive. In stationary cone dystrophy, symptoms tend to remain stable and are usually present at birth or early childhood. In progressive cone dystrophy, symptoms slowly worsen over time, with the age of onset, progression, and severity varying greatly among individuals, even those with the same type of cone dystrophy.

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