The exact cause of PCMO is unclear but may be due to inflammation associated with surgical trauma, secondary to phacoemulsification energy, vitreous-macular traction, or posterior vitritis.
The diagnosis of PCMO can generally be made on clinical examination through dilated fundoscopy.
PCMO is a fairly common presentation but resolves spontaneously in most patients within four to eight weeks.
With the advent of phacoemulsification techniques for cataract extraction, using small incisions and implantation of foldable intraocular lenses (IOL), the incidence of PCMO has greatly reduced compared to previously common intracapsular cataract extraction (ICCE) and extracapsular cataract extraction (ECCE) techniques used routinely some 30 years ago.
During August 19-September 30, 2013, anonymized Internet surveys assessing knowledge about, experience with, and perceptions of malaria and chemoprophylaxis were administered to PCVs and PCMOs serving in 18 African countries where antimalarial chemoprophylaxis is uniformly recommended.
Twenty-six (76%) of responding PCMOs indicated Peace Corps policy regarding chemoprophylaxis improved their ability to prevent malaria, and 44 (94%) appropriately indicated that known side effects were important reasons for changing chemoprophylaxis.
PCMOs recognized that chemoprophylaxis should be changed for known side effects.