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			{{SI}}
			{{Infobox medical condition
			\| name = Vitelliform macular dystrophy
			\| image = [[File:Autosomal_dominant_-_en.svg\|200px]]
			\| caption = Vitelliform macular dystrophy is inherited in an [[autosomal dominant]] pattern.
			\| synonyms = Best disease, Best vitelliform macular dystrophy
			\| field = [[Ophthalmology]]
			\| symptoms = [[Vision loss]], [[blurry vision]], [[metamorphopsia]]
			\| onset = Childhood or early adulthood
			\| duration = Progressive
			\| causes = Genetic mutations in the [[BEST1]] gene
			\| risks = Family history of the condition
			\| diagnosis = [[Ophthalmoscopy]], [[electrooculography]], [[genetic testing]]
			\| differential = [[Age-related macular degeneration]], [[Stargardt disease]]
			\| treatment = No cure, [[low vision aids]], [[vitamin A]] supplementation
			\| prognosis = Variable, can lead to significant vision loss
			\| frequency = Rare
			}}
	'''Vitelliform macular dystrophy''' (VMD), also known as '''Best disease''', is a rare, genetic eye disorder that affects the [[retina]]. It is characterized by the accumulation of yellowish material in the [[macula]], the central part of the retina responsible for sharp, central vision.		'''Vitelliform macular dystrophy''' (VMD), also known as '''Best disease''', is a rare, genetic eye disorder that affects the [[retina]]. It is characterized by the accumulation of yellowish material in the [[macula]], the central part of the retina responsible for sharp, central vision.

	== Symptoms ==		== Symptoms ==

	The symptoms of Vitelliform macular dystrophy typically begin in childhood or adolescence, although they can appear later in life. The most common symptom is a gradual decline in central vision, which can affect one or both eyes. Other symptoms may include distorted vision ([[metamorphopsia]]), trouble distinguishing between colors ([[color blindness]]), and sensitivity to bright light ([[photophobia]]).		The symptoms of Vitelliform macular dystrophy typically begin in childhood or adolescence, although they can appear later in life. The most common symptom is a gradual decline in central vision, which can affect one or both eyes. Other symptoms may include distorted vision ([[metamorphopsia]]), trouble distinguishing between colors ([[color blindness]]), and sensitivity to bright light ([[photophobia]]).

	== Causes ==		== Causes ==

	Vitelliform macular dystrophy is caused by mutations in the [[BEST1]] gene. This gene provides instructions for making a protein that is found in the retina. The protein plays a crucial role in the normal functioning of the retina's light-sensing cells. Mutations in the BEST1 gene disrupt the normal functioning of these cells, leading to the symptoms of Vitelliform macular dystrophy.		Vitelliform macular dystrophy is caused by mutations in the [[BEST1]] gene. This gene provides instructions for making a protein that is found in the retina. The protein plays a crucial role in the normal functioning of the retina's light-sensing cells. Mutations in the BEST1 gene disrupt the normal functioning of these cells, leading to the symptoms of Vitelliform macular dystrophy.

	== Diagnosis ==		== Diagnosis ==

	Diagnosis of Vitelliform macular dystrophy is typically made through a comprehensive eye examination, including a detailed examination of the retina. Additional tests may include [[electroretinography]] (ERG), [[optical coherence tomography]] (OCT), and genetic testing to identify mutations in the BEST1 gene.		Diagnosis of Vitelliform macular dystrophy is typically made through a comprehensive eye examination, including a detailed examination of the retina. Additional tests may include [[electroretinography]] (ERG), [[optical coherence tomography]] (OCT), and genetic testing to identify mutations in the BEST1 gene.

	== Treatment ==		== Treatment ==

	There is currently no cure for Vitelliform macular dystrophy. Treatment is focused on managing symptoms and slowing the progression of the disease. This may include the use of low-vision aids, such as magnifying glasses and large-print materials, and referral to services for individuals with visual impairment.		There is currently no cure for Vitelliform macular dystrophy. Treatment is focused on managing symptoms and slowing the progression of the disease. This may include the use of low-vision aids, such as magnifying glasses and large-print materials, and referral to services for individuals with visual impairment.

	== Prognosis ==		== Prognosis ==

	The prognosis for individuals with Vitelliform macular dystrophy varies. Some individuals may maintain good vision into adulthood, while others may experience a significant decline in vision. Regular follow-up with an ophthalmologist is important to monitor for changes in vision and to manage any complications that may arise.		The prognosis for individuals with Vitelliform macular dystrophy varies. Some individuals may maintain good vision into adulthood, while others may experience a significant decline in vision. Regular follow-up with an ophthalmologist is important to monitor for changes in vision and to manage any complications that may arise.

	== See also ==		== See also ==

	* [[Macular degeneration]]		* [[Macular degeneration]]
	* [[Retinal diseases]]		* [[Retinal diseases]]
	* [[Genetic disorders]]		* [[Genetic disorders]]

	== References ==		== References ==

	{{reflist}}		{{reflist}}

	[[Category:Eye diseases]]		[[Category:Eye diseases]]
	[[Category:Genetic disorders]]		[[Category:Genetic disorders]]
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	~~<gallery>~~
	~~File:Autosomal_dominant_-_en.svg~~
	~~</gallery>~~

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'''Vitelliform macular dystrophy''' (VMD), also known as '''Best disease''', is a rare, genetic eye disorder that affects the [[retina]]. It is characterized by the accumulation of yellowish material in the [[macula]], the central part of the retina responsible for sharp, central vision.

== Symptoms ==

The symptoms of Vitelliform macular dystrophy typically begin in childhood or adolescence, although they can appear later in life. The most common symptom is a gradual decline in central vision, which can affect one or both eyes. Other symptoms may include distorted vision ([[metamorphopsia]]), trouble distinguishing between colors ([[color blindness]]), and sensitivity to bright light ([[photophobia]]).

== Causes ==

Vitelliform macular dystrophy is caused by mutations in the [[BEST1]] gene. This gene provides instructions for making a protein that is found in the retina. The protein plays a crucial role in the normal functioning of the retina's light-sensing cells. Mutations in the BEST1 gene disrupt the normal functioning of these cells, leading to the symptoms of Vitelliform macular dystrophy.

== Diagnosis ==

Diagnosis of Vitelliform macular dystrophy is typically made through a comprehensive eye examination, including a detailed examination of the retina. Additional tests may include [[electroretinography]] (ERG), [[optical coherence tomography]] (OCT), and genetic testing to identify mutations in the BEST1 gene.

== Treatment ==

There is currently no cure for Vitelliform macular dystrophy. Treatment is focused on managing symptoms and slowing the progression of the disease. This may include the use of low-vision aids, such as magnifying glasses and large-print materials, and referral to services for individuals with visual impairment.

== Prognosis ==

The prognosis for individuals with Vitelliform macular dystrophy varies. Some individuals may maintain good vision into adulthood, while others may experience a significant decline in vision. Regular follow-up with an ophthalmologist is important to monitor for changes in vision and to manage any complications that may arise.

== See also ==

* [[Macular degeneration]]
* [[Retinal diseases]]
* [[Genetic disorders]]

== References ==

{{reflist}}

[[Category:Eye diseases]]
[[Category:Genetic disorders]]
[[Category:Rare diseases]]
{{Eye-disease-stub}}
{{Genetics-stub}}

Vitelliform macular dystrophy - Revision history

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