-Solid, benign, congenital tumour.
-Most common location: Infero-temporal limbus.
-Classified as Choristomas (contain cellular elements not normally present in that location).
-Described as elevated, yellowish-white, solid, vascularised, elevated nodules usually 2-15mm in diameter.
Gonioscopy and UBM: can tell us depth of extension of dermoid.
Management:
-Usually a cosmetic problem.
-Visual acuity is affected when they enroach into the pupillary area by tumour/ lipid infiltration that is present around the periphery.
-Irregular astigmatism - meridional amblyopia.
-Spectacles.
-Patching for amblyopia.
-Excision of dermoid.
-Penetrating keratoplasty/ Lamellar keratoplasty.
Look above to see the grading of dermoids!
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