Kajian julong kali ini dijalankan dengan matlamat mencari kewujudan perbezaan fizikal antara kedua mata bagi pesakit-pasakit katarak yang tidak seimbang. Di antara pesakit-pasakit katarak klinik mata USM yang mana mata-mata mereka diukur(Biometri) dan kataraknya digredkan dengan system pengredan katarak yang diubahsuai, 51 pesakit (102 matanya) didapati mempunyai ketidakseimbangan katarak yang ketara. Mata-mata ini dikumpulkan kepada kumpulan teruk (1) dan yang tidak (2). This pilot study was aimed to look for morphological differences between the two eyes of patients with asymmetrical cataract. Cataract patients visiting the eye clinic USM had their eyes measured (biometry) and cataracts graded with modified cataract grading system of whom fifty-one patients (102 eyes) were found to have the defined significant asymmetrical cataracts between the fellow eyes. The two eyes of these patients were grouped into severe (1) and less severe (2) cataract groups. The ocular biometries were analyzed.