###Rationale: Decreased visual acuity may occur as a result of macular involvement or severe vitreous inflammation. ... An active toxoplasmic retinochoroiditis is whitish and moderately exudative with ill-defined borders and involves the macula in a majority of patients.

###Answer: OPTION A IS CORRECT.
###Question: Macula involvement is common in -
###Options:
A. Toxoplasma
B. Malaria
C. CMV
D. Syphilis
