Umshini we-Oct (i-tomography ye-optical corenence) ingukuhlola kokucabanga okungahlangene futhi kuwusizo ekuhlolweni kwezinkinga eziningi zamehlo. Oct usebenzisa amagagasi akhanyayo ukuthatha izithombe ze-retina yakho. Ne- Oct , udokotela wakho we-ophthalmologist angabuka isendlalelo esihlukile se-retina.