> For the complete documentation index, see [llms.txt](https://pb-apps.gitbook.io/lool/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://pb-apps.gitbook.io/lool/how-to/how-to-use-sph-cyl-add-on-contact-lens-prescription-form.md).

# How to use SPH,CYL,ADD on contact lens prescription form?

1. **nav to "Translations" tab, and change "Power" to "SPH", "Base Curve" to "CYL", "Diameter" to "ADD"**

<figure><img src="/files/D4vO0lHciF18sHOAa6RV" alt=""><figcaption></figcaption></figure>

2. **nav to "Form", add your customize options to CYL and ADD**

<figure><img src="/files/q79d9alaT9Iw37Pm28hF" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/jdzP3hjgwFwuq8jAIxMc" alt=""><figcaption></figcaption></figure>

3. **Save and preview your product**

<figure><img src="/files/MQFAOmpcCJ9tKy0u6oKg" alt=""><figcaption></figcaption></figure>