Ectopia lentis is seen in
cause of ectopia lentis :

Marfan syndrome ⇒ Supero temporal dislocation
Homocystimuria ⇒Inferonasal dislocation
Weill - Marchesani syndrome ⇒  anterior and inferior dislocation
Hyperhysinemia
Sulfite oxidase deficiency
Ehler - Danlos syndrome
Hyperlysinenia
Weill - Marchesani syndrome
Sulfite oxidase deficiency
All of the above