The forms on which you have to apply for indefinite leave to remain in the UK can be found on the GOV.uk website. This page will lead you through a series of questions about your immigration status and will tell you which form you need.
From Eyeos: eyeOS is an Open Source Web Desktop Environment, commonly known as Web Operating System (Web OS) or Web Office. eyeOS is Open Source Software. The basic System comes with some office and PIM applications, and the complete eyeOS software database can be found at eyeApps and in the public server.
When eye-care providers examine you, they see your right eye on their left and your left eye on their right. To ensure that they write the measurements in the correct spot on the prescription form, the column for your right eye, or OD, is on the left side of the form, and OS is on the right.