The difference between stock and manufactured lenses lies in the way they are produced and the customisation options available, as we can see below:
Stock lenses
- Prefabricated in standard sizes and strengths.
- These are mass-produced to meet the most common prescriptions.
- They generally have limited customisation options, such as a choice of size and strength available in a predetermined set.
- They are more affordable and ready for immediate delivery, without the need for additional manufacturing.
Manufactured Lenses (or custom lenses):
- These are tailor-made to meet the user’s individual vision correction needs.
- They are produced based on the user’s specific prescription specific prescription and take into account factors such as the type of frame and the position of the eyes.
- They offer greater flexibility in terms of customisation, including advanced options such as multifocal lenses or lenses for correcting high astigmatism.
- Typically, they require an additional manufacturing period.
