Human Phenotype Ontology 
Parent Node:
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External ophthalmoplegia (HP:0000544)help
..Starting node
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Progressive external ophthalmoplegia (HP:0000590)help
Term ID:590
Name:Progressive external ophthalmoplegia
Definition:Initial bilateral ptosis followed by limitation of eye movements in all directions and slowing of saccades.
Comments:
Reference:HP:0000590
MSeqDR-LSDB(LS)
& Disease (OMIM):
1. LS OMIM: #157640 PROGRESSIVE EXTERNAL OPHTHALMOPLEGIA ..
2. LS OMIM: #165500 OPTIC ATROPHY 1; OPA1;;OPTIC ATROPHY,..
3. LS OMIM: #258450 PROGRESSIVE EXTERNAL OPHTHALMOPLEGIA ..
4. LS OMIM: #603041 MITOCHONDRIAL DNA DEPLETION SYNDROME ..
5. LS OMIM: #607459 SENSORY ATAXIC NEUROPATHY, DYSARTHRIA..
6. LS OMIM: #609286 PROGRESSIVE EXTERNAL OPHTHALMOPLEGIA ..
7. LS OMIM: #610131 PROGRESSIVE EXTERNAL OPHTHALMOPLEGIA ..
8. LS OMIM: #613077 PROGRESSIVE EXTERNAL OPHTHALMOPLEGIA ..
9. LS OMIM: #613662 MITOCHONDRIAL DNA DEPLETION SYNDROME ..
10. LS OMIM: #615084 MITOCHONDRIAL DNA DEPLETION SYNDROME ..
11. LS OMIM: #615156 PROGRESSIVE EXTERNAL OPHTHALMOPLEGIA ..

Warning: 10 out of 15 matches reported due to space limit
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       Child Nodes:

 Sister Nodes: 
..expandNonprogressive restrictive external ophthalmoplegia (HP:0007831) help
..expandRecurrent external ophthalmoplegia (HP:0007250) help
..expandRestrictive external ophthalmoplegia (HP:0007936) help
 

Human Phenotype Ontology(HPO) is developed by the Human Phenotype Ontology Consortium.