Unable to leave home unaccompanied or Require a home visit on account of a physical or mental disability And you fall into one of the categories for a free NHS sight test listed below: Aged 60 or over Under 16, or under 19 and in full-time education Registered blind or partially sighted Diagnosed as having diabetes or glaucoma 40 or over with a direct relative with glaucoma, or you have been advised by an ophthalmologist that you are at risk of glaucoma Prescribed a complex lens. or you (or your partner) are receiving the following benefits or credits: Income Support or Income Based Job Seekers Allowance (not contribution based) Working Tax Credit and are named on a Tax Credit NHS Exemption Certificate Child Tax Credit and are named on a Tax Credit NHS Exemption Certificate You are named on a NHS certificate for full or partial help with health costs (HC2/3) Pension Credit Guarantee Credit