Why Does Lens Thickness Matter?
According to Fick's Law of Diffusion, the rate of oxygen diffusion through a material is inversely proportional to its thickness — thinner lenses allow more oxygen to pass through, resulting in noticeably more comfortable eyes.
What Is Hydrogel Ultraslim?
Hydrogel Ultraslim is a manufacturing technology that produces hydrogel lenses with a center thickness of just 0.08mm, compared to standard hydrogel lenses which are typically 0.10-0.15mm thick.
Thickness Comparison
- Standard lenses: 0.10-0.15mm
- Hydrogel Ultraslim: 0.08mm (up to 47% thinner)
- Human hair: ~0.07mm — Ultraslim lenses are nearly as thin as a hair!
Research by Brennan (2005) demonstrated that a lens's Dk/t value increases inversely with thickness — meaning thinner lenses, even with the same material, transmit more oxygen.
Benefits of Hydrogel Ultraslim in Glitzlens Lenses
- Ultralight weight: Reduces pressure on the cornea, preventing eye fatigue
- Soft and flexible: Conforms to all eye shapes comfortably
- Perfect for beginners: Easy to insert due to the soft, non-irritating material
- Better oxygen transmission: Thinness increases Dk/t per Fick's Law
Who Is It For?
Hydrogel Ultraslim is ideal for first-time contact lens wearers because the ultra-thin, soft material minimizes discomfort. It's also great for anyone seeking maximum daily comfort.
Care Tips
Due to the ultra-thin profile, handle with extra care:
- Always wash hands thoroughly before handling lenses
- Use recommended lens solution — never tap water
- Replace lenses on schedule — never exceed wearing period
References
- Brennan, N. A. (2005). A model of oxygen flux through contact lenses. Cornea, 20(2), 104-108.
- Dumbleton, K. A., et al. (2006). Changes in myopic refractive error with nine months of extended wear of hydrogel lenses with high and low oxygen permeability. Optometry and Vision Science, 83(4), 239-245.
- Nichols, J. J., & Sinnott, L. T. (2006). Tear film, contact lens, and patient-related factors associated with contact lens-related dry eye. Investigative Ophthalmology & Visual Science, 47(4), 1319-1328.