Scleral disease refers to any disease or defect affecting the sclera, which is the white outer layer of the eye. Antonyms for this term could include words related to the absence or lack of scleral disease, such as healthy, normal, or unaffected. Other antonyms may imply qualities opposite to the symptoms of scleral disease, such as painless, clear, or uncongested. The opposite of scleral disease may also describe conditions that exist in the absence of any eye or vision-related disorders, such as perfect, ideal, or pristine. Overall, antonyms for scleral disease tend to focus on the qualities of unaffected, normal, and disease-free eyes.