Purpose : To assess the usefulness of CISS images in the diagnosis of intraocular lesions, we compared CISS images with 3mm and 1mm sliced spin-echo T2-weighted images. Materials and Methods : In 14 patients with 15 intraocular lesions(retinal detachment 10, choroidal melanoma, 2 ; cavernous hemangioma, 1 ; PHPV, 1 ; and retinoblastoma, 1). we used a 1.5T MR unit obtain CISS images and 3mm and 1mm sliced spin-echo T2-weighted images. All lesions were analyzed, and after dividing them into two subgroups(linear lesions, n=11 ; mass lesions, n=4), CISS and spin-echo T2-weighted images were compared for detection rate and conspicuity. Results : With regard to these two parameters, CISS images were superior to 1mm and 3mm sliced spin-echo T2-weighted images. For the assessment of linear lesions, CISS images (detection rate, 100% ; conspicuity, 2.88) were superior to both 1mm and 3mm sliced spin-echo T2-weighted images. For mass lesions CISS images were superior to 3mm sliced spin-echo T2-weighted images, but for conspicuity, there was no significant difference between CISS images (2.75) and 1mm sliced spin-echo T2-weighted images(2.2). Conclusion : Due to their higher detection rate and greater conspicuity, CISS images were superior to spin-echo T2-weighted images for the diagnosis of intraocular lesions less than 3mm in diameter ; for the diagnosis of intraocular lesions, they might therefore be a useful adjunct to SE images.