A method for screening a compound or combination of compounds for efficacy in treating or preventing an ocular disease, comprising: obtaining a sample taken from aqueous humor or vitreous humor of a subject selected from a subject having the ocular disease, a family member or close genetic relation of a subject having the ocular disease, or a deceased subject known to have had the ocular disease; culturing one or more organisms in the sample under conditions that mimic human intraocular space or in cooked meat medium to produce one or more cultures; adding the compound or combination of compounds to the one or more cultures; and determining whether the compound or combination of compounds reduces growth or reduces population of the one or more cultures, wherein the ocular disease is AMD; and the one or more organisms are selected from the group consisting of Staphylococcus epidermidis, Pseudomonas aeruginosa, Staphylococcus aureus, Staphylococcus haemolyticus, Pseudomonas putida, Stenotrophomonas maltophilia, Bacillus cereus, Bacillus megaterium, Lactobacillus reuteri, Gardnerella vaginalis, Enterococcus faecium, Cytophaga hutchinsonii, Bacillus licheniformis, Xanthomonas oryzae, Sphingomonas wittichii, Klebsiella pneumoniae, Pseudomonas fluorescens, Ralstonia pickettii, Lactobacillus crispatus, Burkholderia multivorans, Lactobacillus delbrueckii, Meiothermus silvanus, Pseudomonas mendocina, Kytococcus sedentarius, Alicycliphilus denitrificans, Achromobacter xylosoxidans, Sphingobium japonicum, Mycobacterium abscessus, Arthrobacter aurescens, Prevotella dentalis, Sinorhizobium meliloti, Acidovorax ebreus, Acinetobacter baumannii, Acinetobacter calcoaceticus, Comamonas testosteroni, Mycobacterium kansasii, Bacillus thuringiensis, Citrobacter koseri, Dyadobacterfermentants, Serratia marcescens, Escherichia coli, Micrococcus luteus, Bacillus subtilis, Corynebacterium aurimucosum, Finegoldia magna, and combinations thereof. obtaining a sample taken from aqueous humor or vitreous humor of a subject selected from a subject having the ocular disease, a family member or close genetic relation of a subject having the ocular disease, or a deceased subject known to have had the ocular disease; culturing one or more organisms in the sample under conditions that mimic human intraocular space or in cooked meat medium to produce one or more cultures; adding the compound or combination of compounds to the one or more cultures; and determining whether the compound or combination of compounds reduces growth or reduces population of the one or more cultures, wherein the ocular disease is AMD; and the one or more organisms are selected from the group consisting of Staphylococcus epidermidis, Pseudomonas aeruginosa, Staphylococcus aureus, Staphylococcus haemolyticus, Pseudomonas putida, Stenotrophomonas maltophilia, Bacillus cereus, Bacillus megaterium, Lactobacillus reuteri, Gardnerella vaginalis, Enterococcus faecium, Cytophaga hutchinsonii, Bacillus licheniformis, Xanthomonas oryzae, Sphingomonas wittichii, Klebsiella pneumoniae, Pseudomonas fluorescens, Ralstonia pickettii, Lactobacillus crispatus, Burkholderia multivorans, Lactobacillus delbrueckii, Meiothermus silvanus, Pseudomonas mendocina, Kytococcus sedentarius, Alicycliphilus denitrificans, Achromobacter xylosoxidans, Sphingobium japonicum, Mycobacterium abscessus, Arthrobacter aurescens, Prevotella dentalis, Sinorhizobium meliloti, Acidovorax ebreus, Acinetobacter baumannii, Acinetobacter calcoaceticus, Comamonas testosteroni, Mycobacterium kansasii, Bacillus thuringiensis, Citrobacter koseri, Dyadobacterfermentants, Serratia marcescens, Escherichia coli, Micrococcus luteus, Bacillus subtilis, Corynebacterium aurimucosum, Finegoldia magna, and combinations thereof.