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Results found in several dictionaries: Collins, Collaborative Dictionary
after-effect  n consecuencia  f  after-effects 
[+of treatment] 
efectos  mpl  secundarios 
[+of illness, operation, accident] 
secuelas  fpl 

Collaborative Dictionary     English-Spanish
Doppler effect n. el efecto Doppler Reverso General Dictionary 
lighting effect n. el efecto de luz Reverso General Dictionary 
loading effect n. el efecto de carga Reverso General Dictionary 
ripple effect n. el efecto de onda Reverso General Dictionary 
side effect n. el efecto secundario Reverso General Dictionary 
skin effect n. el efecto superficial Reverso General Dictionary 
tunnel effect n. el efecto túnel Reverso General Dictionary 
best visual effects Oscar n. el Óscar a los mejores efectos visuales Reverso General Dictionary 
best sound effects editing Oscar n. el Óscar a los mejores efectos sonoros Reverso General Dictionary 
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'after-effect' also found in translations in Spanish-English dictionary
la relación causa-efecto nm. cause and effect relationship Reverso General Dictionary 
! beneficio de inventario n. benefit of inventory, the effect of which pay debts to a larger amount than that of the inheritance  
óscar a los mejores efectos sonoros pref. best sound effects editing Oscar Reverso General Dictionary 
Oscar a los mejores efectos visuales pref. best visual effects Oscar Reverso General Dictionary 
óscar a los mejores efectos visuales pref. best visual effects Oscar Reverso General Dictionary 

"Collins Spanish Dictionary 8th edition published in 2005 © William Collins Sons & Co Ltd 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005"