What factors affect/correlate with viral PCR yield in aqueous in a patient with recurrent episodes of uveitis associated with high IOP?

Regarding viral PCR testing of aqueous for patients with recurrent episodes of hypertensive uveitis, I have the following thoughts:

• For herpetic uveitis specifically, HSV (1 and 2), VZV, and CMV, sampling the aqueous for viral PCR is highly sensitive (upwards of +90%) and comparable to that of vitre...