Fig. 2

Positive results of multiplex polymerase chain reaction demonstrating positivity to tubercular antigens in the vitreous fluid. Band L1 represents 100-bp molecular marker; L2 is the positive control (asterisk indicates protein B (419 bp), double asterisks indicate MPB64 (240 bp), dagger indicates IS6110 (123 bp)). Band L3 is the negative control. Bands L4, L5, and L6 represent the positive results obtained from the vitreous fluid of the patient described in the index case