Differential diagnosis and treatment of XXXX .

@entity1 @entity7611 @entity1614 @entity262 @entity726 @entity36640 @entity715 @entity20377 @entity3029
@entity20377 continues to be a perplexing diagnostic and therapeutic problem for most ophthalmologists. However, thorough investigation, both systemic and ocular, can in most cases, establish either an environmental etiology or the nature of the heritable disorder. In cases with @entity262 and @entity20377 , the ophthalmologist should insure that each @entity1 obtains adequate consultation with other specialists in order that proper prophylactic and therapeutic measures are available. The @entity1614 , @entity7611 , and the @entity36640 together account for the majority of @entity3029 . Each of these requires a somewhat different therapeutic approach. @entity726 should be recognized as a frequent complication in each of these conditions but is most serious in the @entity36640 in which it often occurs early in life and remains unrecognized until serious damage has occurred. Because of the pupillary-block nature of the @entity726 in this condition, a prophylactic peripheral iridectomy must be seriously considered in every case while lens surgery should be undertaken if the @entity726 cannot be controlled by medical or surgical means. In @entity7611 , because of the potential vascular complications of general anesthesia, the ophthalmologist is often in a dilemma. The lens in this condition seems to be more mobile than in other @entity20377 and therefore likely to compromise vision earlier in life. However, due to the risk of vascular @entity715 , lens surgery should be delayed whenever possible until the @entity1 is old enough to tolerate local anesthesia. Likewise, @entity1 with the @entity1614 should be handled conservatively and, in general, function quite well simple with spectacle correction. Due to the high frequency of immediate surgical complications, it is advisable to avoid an open-sky technique to lens removal, using aspiration or a pars plana approach instead.
