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			{{SI}}
			{{Infobox medical condition
			\| name = Persistent pupillary membrane
			\| image = [[File:Persistent_Pupillary_Membrane_-_Fireinthexdisco.jpg\|left\|thumb\|Persistent pupillary membrane]]
			\| caption = Persistent pupillary membrane visible in the eye
			\| field = [[Ophthalmology]]
			\| symptoms = [[Strands]] of tissue across the [[pupil]]
			\| complications = [[Visual impairment]] (rare)
			\| onset = [[Congenital]]
			\| duration = [[Lifelong]]
			\| causes = Incomplete regression of the [[tunica vasculosa lentis]]
			\| risks = None
			\| diagnosis = [[Ophthalmic examination]]
			\| differential = [[Cataract]], [[aniridia]], [[coloboma]]
			\| treatment = Usually none required, [[surgical removal]] if necessary
			\| medication = None
			\| prognosis = Excellent
			\| frequency = Common
			}}
	'''Persistent pupillary membrane''' (PPM) is a condition that occurs when remnants of a fetal membrane that nourishes the eyes of a developing fetus persist after birth. This condition is most commonly seen in dogs, but can also occur in cats and humans.		'''Persistent pupillary membrane''' (PPM) is a condition that occurs when remnants of a fetal membrane that nourishes the eyes of a developing fetus persist after birth. This condition is most commonly seen in dogs, but can also occur in cats and humans.
			== Introduction ==
	==~~Overview~~==
	The [[pupil]] is the opening in the center of the [[iris]] that allows light to reach the back of the eye. During fetal development, a membrane called the pupillary membrane covers the pupil to protect the developing structures of the eye. Normally, this membrane completely disappears before birth. However, in some cases, parts of the membrane remain, leading to a condition known as persistent pupillary membrane.		The [[pupil]] is the opening in the center of the [[iris]] that allows light to reach the back of the eye. During fetal development, a membrane called the pupillary membrane covers the pupil to protect the developing structures of the eye. Normally, this membrane completely disappears before birth. However, in some cases, parts of the membrane remain, leading to a condition known as persistent pupillary membrane.

	==Causes==		==Causes==
	The exact cause of PPM is unknown, but it is believed to be a genetic condition. Certain breeds of dogs, such as the [[Basenji]], are more prone to this condition. In humans, it is a rare condition and is often associated with other eye abnormalities.		The exact cause of PPM is unknown, but it is believed to be a genetic condition. Certain breeds of dogs, such as the [[Basenji]], are more prone to this condition. In humans, it is a rare condition and is often associated with other eye abnormalities.

	==Symptoms==		==Symptoms==
	The primary symptom of PPM is visible strands or a web-like structure in the pupil. Depending on the severity of the condition, these strands can partially or completely obstruct the pupil, leading to vision problems. Other symptoms can include [[cataracts]], [[glaucoma]], and [[retinal detachment]].		The primary symptom of PPM is visible strands or a web-like structure in the pupil. Depending on the severity of the condition, these strands can partially or completely obstruct the pupil, leading to vision problems. Other symptoms can include [[cataracts]], [[glaucoma]], and [[retinal detachment]].

	==Diagnosis==		==Diagnosis==
	PPM is typically diagnosed through a comprehensive eye examination. This can include a [[slit lamp examination]], which allows the veterinarian or ophthalmologist to examine the structures at the front of the eye, and an [[ophthalmoscopy]], which allows examination of the back of the eye.		PPM is typically diagnosed through a comprehensive eye examination. This can include a [[slit lamp examination]], which allows the veterinarian or ophthalmologist to examine the structures at the front of the eye, and an [[ophthalmoscopy]], which allows examination of the back of the eye.

	==Treatment==		==Treatment==
	Treatment for PPM depends on the severity of the condition. In mild cases, no treatment may be necessary. In more severe cases, where vision is affected, surgical removal of the strands may be necessary. Medications may also be used to reduce inflammation and prevent further vision loss.		Treatment for PPM depends on the severity of the condition. In mild cases, no treatment may be necessary. In more severe cases, where vision is affected, surgical removal of the strands may be necessary. Medications may also be used to reduce inflammation and prevent further vision loss.

	==Prognosis==		==Prognosis==
	The prognosis for animals or humans with PPM largely depends on the severity of the condition. In mild cases, the strands may not affect vision and the individual can lead a normal life. In severe cases, where vision is significantly affected, the prognosis is less favorable.		The prognosis for animals or humans with PPM largely depends on the severity of the condition. In mild cases, the strands may not affect vision and the individual can lead a normal life. In severe cases, where vision is significantly affected, the prognosis is less favorable.

	==See also==		==See also==
	* [[Eye disease]]		* [[Eye disease]]
	* [[Veterinary ophthalmology]]		* [[Veterinary ophthalmology]]

	[[Category:Eye diseases]]		[[Category:Eye diseases]]
	[[Category:Veterinary medicine]]		[[Category:Veterinary medicine]]
	{{Eye-disease-stub}}		{{Eye-disease-stub}}
	{{Veterinary-medicine-stub}}		{{Veterinary-medicine-stub}}
	~~<gallery>~~
	~~File:Persistent_Pupillary_Membrane_-_Fireinthexdisco.jpg~~
	~~</gallery>~~

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2025-02-17T02:03:51Z

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	{{Eye-disease-stub}}		{{Eye-disease-stub}}
	{{Veterinary-medicine-stub}}		{{Veterinary-medicine-stub}}
			<gallery>
			File:Persistent_Pupillary_Membrane_-_Fireinthexdisco.jpg
			</gallery>

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2024-02-29T17:55:38Z

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New page

'''Persistent pupillary membrane''' (PPM) is a condition that occurs when remnants of a fetal membrane that nourishes the eyes of a developing fetus persist after birth. This condition is most commonly seen in dogs, but can also occur in cats and humans.

==Overview==
The [[pupil]] is the opening in the center of the [[iris]] that allows light to reach the back of the eye. During fetal development, a membrane called the pupillary membrane covers the pupil to protect the developing structures of the eye. Normally, this membrane completely disappears before birth. However, in some cases, parts of the membrane remain, leading to a condition known as persistent pupillary membrane.

==Causes==
The exact cause of PPM is unknown, but it is believed to be a genetic condition. Certain breeds of dogs, such as the [[Basenji]], are more prone to this condition. In humans, it is a rare condition and is often associated with other eye abnormalities.

==Symptoms==
The primary symptom of PPM is visible strands or a web-like structure in the pupil. Depending on the severity of the condition, these strands can partially or completely obstruct the pupil, leading to vision problems. Other symptoms can include [[cataracts]], [[glaucoma]], and [[retinal detachment]].

==Diagnosis==
PPM is typically diagnosed through a comprehensive eye examination. This can include a [[slit lamp examination]], which allows the veterinarian or ophthalmologist to examine the structures at the front of the eye, and an [[ophthalmoscopy]], which allows examination of the back of the eye.

==Treatment==
Treatment for PPM depends on the severity of the condition. In mild cases, no treatment may be necessary. In more severe cases, where vision is affected, surgical removal of the strands may be necessary. Medications may also be used to reduce inflammation and prevent further vision loss.

==Prognosis==
The prognosis for animals or humans with PPM largely depends on the severity of the condition. In mild cases, the strands may not affect vision and the individual can lead a normal life. In severe cases, where vision is significantly affected, the prognosis is less favorable.

==See also==
* [[Eye disease]]
* [[Veterinary ophthalmology]]

[[Category:Eye diseases]]
[[Category:Veterinary medicine]]
{{Eye-disease-stub}}
{{Veterinary-medicine-stub}}

Persistent pupillary membrane - Revision history

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