Keyhole Iris!

𝘐𝘳𝘪𝘴 𝘊𝘰𝘭𝘰𝘣𝘰𝘮𝘢⁣ ⁣ - Closure of the embryonic/optic fissure - completed by 6 weeks⁣ ⁣ - Failure of closure of the fissure in front - formation of an iris coloboma⁣ ⁣ Typical : Located in the inferonasal quadrant

Atypical : Located elsewhere⁣





⁣ 𝘛𝘺𝘱𝘦𝘴:⁣ ⁣ ● Total : Whole sector of the iris upto to the ciliary body - ‘keyhole defect’⁣ ● Partial : Do not involve whole sector of the iris - appears as notch at the pupillary margin⁣ ⁣ 𝘏𝘪𝘴𝘵𝘰𝘭𝘰𝘨𝘪𝘤𝘢𝘭𝘭𝘺:⁣ ⁣ ● Complete : Whole thickness of iris⁣ ● Incomplete : Either pigment epithelium or stroma are involved⁣ ● Bridge : Mesectodermal tissue forms a pupillary membrane that stretches across the defect⁣ ⁣ Due to the enlarged pupillary space → inability to contract pupil properly and increased light entering the eye → sensitive to bright light/ photophobia⁣ ⁣ Can be associated with early cataract ⁣ ⁣ No treatment if it’s an isolated finding⁣ ⁣ www.ophthalmobytes.com⁣ ⁣ Image from Rajan Eye Care Hospital #ophthalmology #ophthal #coloboma #iris #iriscoloboma #doctor #health #medical #vision #education #optometry #medicalstudent #optometrist #medicine #eye #ophtho #ophthalmologist #ophthalmo #med #medicaleducation #ophthalmologyresident #ophthalmologyresidency

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