eye schematic

Embryology of Eye : Mnemonic

Epomedicine,

Surface ectoderm derivatives

Mnemonic: LEVeL

  1. Lens
  2. Epithelium
    • All ocular adnexa including mebomian gland and glands of Zeis and Moll
    • Skin
    • Cornea
    • Conjunctiva
  3. Vitreous (portion)
  4. Lacrimal glands and drainage system

Neuro-ectoderm (Optic vesicle and cup) derivatives

Mnemonic: MORE

  1. Muscles of pupil (constrictor and dilator pupillae)
  2. Optic nerve
  3. Retinal pigment epithelium
  4. Epithelium of iris and ciliary body

Mesoderm derivatives

Mnemonic: MESO

  1. Muscles (Extraocular)
  2. Endothelium of eye and orbital blood vessels
  3. Sclera (temporal portion)
  4. Others (Vitreous)

All other structures are derived from Neural crest cells.

PGMEE, MRCS, USMLE, MBBS, MD/MS

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