Hard contact lenses, formally known as rigid gas permeable (RGP) lenses, offer a clear vision correction option for many individuals. These lenses are made from a firm, oxygen-permeable material that maintains its shape on the eye. While they provide sharp vision and durability, a common question arises regarding their comfort. Comfort with RGP lenses is a nuanced experience, often involving an initial adjustment period.
Initial Experience with Hard Lenses
When first wearing hard contact lenses, it is common to experience some initial discomfort. This sensation often feels like having a foreign object or an eyelash in the eye. This is due to the rigid nature of RGP lenses, which differ significantly from soft contact lenses.
The eyes undergo an adaptation period to get accustomed to the new lens material and feel. During this time, typically lasting 1 to 3 weeks, symptoms such as itchiness, watery eyes, mild redness, and a burning sensation can occur. As the eyes adapt, these initial sensations diminish, and many report RGP lenses become comfortable, sometimes even more so than soft lenses, once full adaptation is achieved.
Common Causes of Discomfort
Discomfort with hard contact lenses beyond the initial adaptation phase can stem from several factors. An improper lens fit is a frequent cause, such as a lens that is too tight, too loose, or incorrectly shaped. An ill-fitting lens can cause friction, pressure points, or inadequate tear exchange, leading to irritation, dryness, or a foreign body sensation.
Dry eyes also contribute to discomfort with RGP lenses. Insufficient or unstable tear film can cause the lens to rub against the eye’s surface, leading to dryness, irritation, and a burning sensation. Environmental factors, such as wind or low humidity, can exacerbate tear film instability and increase dryness.
Foreign objects or debris, like dust or lint, can easily become trapped under RGP lenses, causing acute discomfort. Accumulated proteins, lipids, or other deposits on the lens surface can interfere with oxygen flow and tear film stability, leading to discomfort and reduced vision. In some cases, allergies to environmental substances or even to lens care solutions can trigger eye irritation and discomfort.
Strategies for Enhanced Comfort
Consistent care and attention maintain comfort with hard contact lenses. Proper cleaning and disinfection prevent deposit buildup and maintain lens hygiene. Thoroughly washing hands before handling lenses and using recommended cleaning solutions are important steps to minimize contamination and irritation.
Rewetting drops formulated for RGP lenses provide lubrication and combat dryness throughout the day. These drops help maintain a stable tear film and reduce friction between the lens and the eye. Adjusting to environmental conditions, such as using humidifiers in dry settings or wearing protective eyewear in windy environments, can also help mitigate discomfort.
Conscious blinking techniques improve comfort by redistributing the tear film evenly across the lens surface. Full, deliberate blinks help ensure proper tear exchange and prevent the lens from drying out. Regular follow-up appointments with an eye care professional are also important for assessing lens fit and eye health, allowing for necessary adjustments to the lenses or care routine.
When to Seek Professional Advice
Seek professional advice from an eye care specialist if discomfort with hard contact lenses persists or worsens. Symptoms such as ongoing pain, significant eye redness, blurred vision that does not resolve, or excessive tearing warrant immediate attention. These signs could indicate underlying issues like an improper lens fit, an infection, corneal abrasion, or severe dry eye that require medical evaluation. Ignoring these symptoms or attempting to self-diagnose can lead to more serious eye health complications. Regular eye examinations are also important for monitoring overall eye health and ensuring the continued suitability of contact lenses.