Contacts Knowledge

Understanding Water content and Replacement Cycles

Choosing the perfect contact lenses is a crucial decision, as contacts will directly impact your comfort, eye health, and overall satisfaction. Two key effects to consider are the water content of the lenses and the recommended replacement schedule.

What is the role of water in contact lenses?

The water content refers to the amount of water incorporated into the lens material during the manufacturing process. Water content can vary significantly between different contact lens types and brands, and water content is a critical characteristic of contact lenses as it affects how they interact with your eyes. Water content consists of high, middle, and low.

Low water content lenses

Contact lenses with low water content typically contain less than 40% water. These lenses tend to be more durable and retain their shape well, and they are less prone to dehydration, making them suitable for extended wear. Low oxygen permeability, solid lenses, and uncomfortable wearing experience are the drawbacks of low water content.

Middle water content lenses

It refers to the value from 40% to 50%, for example, the Rebirth Cosmic Green and the Cocktail Vesper Martini Grey of Unicornsbeauty, whose water content is 40% and the soft lenses are very suitable, so it is comfortable to wear into the eye. But the contact lenses will be dry after wearing them for a long time like more than 8 hours, and it depends on how health of your eyes.

High water content lenses

It contains more than 50% water. High water content lenses are known for their exceptional comfort due to the higher water content, which helps maintain moisture on the lens surface. Because of the high water contact, the oxygen permeability of contact lenses will be better, giving a comfortable sensation. However, it is difficult for a person who is on the first time because of the soft to wear. It is also easy to break, and if you wear it for a long time, your eyes will be dry due to the water content of contact being exhausted, the lens will begin to absorb the water of your eyes, making them more and more dry.

Why 40%-50% water content lenses can be your first choice?

The choice of 40% to 50% contact lenses depends on your comfort needs and how long you plan to wear your lenses. If you seek both soft and superior comfort, middle water content lenses are your first choice, but they may require more frequent replacement.

The advantages of wearing high water contact

Individuals with dry or sensitive eyes often find higher water content lenses more comfortable. These lenses can help alleviate the discomfort associated with dry eye syndrome. The extra moisture can reduce eye dryness, itchiness, and the feeling of foreign objects in the eye, making them more comfortable to wear.

Environmental conditions, such as low humidity, can affect the comfort of contact lenses. In dry climates or when exposed to air conditioning or heating, lenses with higher water content may help keep your eyes comfortable by retaining moisture.

Selecting the Right Replacement Cycle

Daily disposable lenses are designed for single use. They are comfortable to wear and give you a fresh pair each day. For people with busy lifestyles or those who prioritize hygiene, this replacement schedule is excellent. But the price is the highest.

Bi-weekly and monthly disposable contact lenses are replaced after two weeks and one month, respectively. These lenses require proper cleaning and storage when not in use, making them a cost-effective choice for many wearers.

The material of Annual Throw is hard, breathable, and easy to wear, and it’s the most affordable. However, because of the long wearing time, it is easy to adhere to bacteria and stains. If you want to try a different color to choose the most favorite goods, but you don’t want to waste them, then you can pick the annual lenses, because it is cost-effective.

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How to Choose the Right Replacement Cycle?

Factors should be considered, such as your eye health, lifestyle, and your purpose for wearing this lens.

Consider how often you’re willing to clean and maintain your lenses and how much you want to invest in lens care products. As a matter of fact, daily disposables are the most convenient but can be costlier, while monthly lenses require more maintenance but may be more budget-friendly.

What’s more, the water content of contact lenses directly impacts comfort by influencing moisture retention and how the lenses interact with your eyes.  

Tips for sweet you:

Consultation with an Eye Care Professional to know your eye condition.

The wearing period of the contacts means the time after the contacts are worn. After receiving the goods, you can check the shelf life, which is also called the expiration date on the pupil package.

You can’t wear glasses overnight, because it will put the cornea in an anaerobic state, and it is easy to cause eye allergies and inflammation if you do this for a long time.

Different wearing hours:

Wearing 2~4 hours on the first day, 4~6 hours on the second day, 6~8 hours on the third day, and later you can wear it for no more than 8~10 hours per day.

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