šš¦ššš¦šÆā£ ā£ ā Fuchs described them as saucer like excavations at the periphery of the corneaā£ ā£ ā Clearly-defined excavationsā£ ā£ ā Temporal side usuallyā£ ā£ ā Forming ellipses parallel to the limbusā£ ā£ ā Paralimbal elevation ā localised break in the precorneal oily tear film ā localised dehydration and thinningā£ ā£ ā Focal absence of mucin layer ā cornea epithelium is hydrophobic and in absence of mucin will repel water and produce a dry spot ā dry epithelial surface ā local deturgescence of underlying anterior stroma ā overlying epithelium erodesā defect createdā£ ā£ ā Fluorescein pools in the depression and at times there is overlying stainingā£ ā£ ā Epithelium within the dellen can either be clear or opaque in appearanceā£
ā£ šš¢š¶š“š¦š“:ā£ ā£ 1. Following limbal elevation (episcleritis, scleritis, angioma, thick pingecula, pterygium, subconjunctival injections, filtering blebs, suture granuloma, limbal tumours)ā£ 2. After cataract surgery/ strabismus surgeryā£ 3. Rigid contact lens wearā£ 4. Following paralytic lagophthalmosā£ 5. Spontaneously in elderly personsā£ ā£ Treatment involves reduction of the paralimbal elevation and re-establishment of the mucin layer and a hydrophilic surface- Frequent lubrication, Bandage contact lenses, tarsorrhaphy.ā£ ā£ Image from Rajan Eye Care Hospitalā£ #ophthalmology #ophthal #cornea #dellen #doctor #health #medical #vision #education #optometry #medicalstudent #optometrist #medicine #eye #ophtho #ophthalmologist #ophthalmo #med #medicaleducation #ophthalmologyresident #ophthalmologyresidency
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