Corneal scraping from patients will have its DNA extracted and eluted in the buffer. The DNA than mixed with the primer strips tube and be analyzed in Real-Time PCR machine. According to the record information from the hospital, the pathogen that usually found from endophthalmitis, keratitis, corneal ulcer diseases in our hospital is Pseudomonas sp., Staphylococcus aureus, Staphylococcus epidermidis, Acinetobacter sp., Pseudomonas aeruginosa, Acanthamoeba sp., Aspergillus fumigatus, Aspergillus flavus, Fusarium sp., and Candida albicans. And based on the report from Zhao et al (2014) Herpes Simplex Virus may be detected from patients with keratitis. Therefore in this study, we are trying to detect all of the pathogens simultaneously using the real-time PCR assay from patients corneal scraping who experience eye infections as mention above.

Ferrer and Alio (2011) report from 10 years of study shown that culture test as current gold standard will provide positive value by 59.3% for detecting keratitis pathogen. Based on this report, we see the potential increase of positive value by using multiplex PCR around 20 points (70%). Sensitivity will be calculated by true positive divided by all positive patients and specificity will be calculated by true negative divided by all negative patients. The results will be compared with the current gold standard with target increase 20 points or 70%.