A judicial officer in a State has to possess reasonable limit of the faculties of hearing, sight and speech in order to hear cases and write judgments and, therefore, stipulating a limit of 50% disability in hearing impairment or visual impairment as a condition to be eligible for the post is a legitimate restriction i.e. fair, logical and reasonable."

Source: https://www.livelaw.in/top-stories/stipulating-50-disability-limit-in-hearing-impairment-or-visual-impairment-for-post-of-judicial-officer-legitimate-sc-read-judgment-142315