What Can Make Contacts Hard to Fit?
Why Some Eyes Are Hard to Fit for Contact Lenses
You may be considered hard to fit if standard contact lenses do not stay in place, feel uncomfortable, or fail to provide clear vision. Many patients with high prescriptions, unusual corneal shapes, or certain eye conditions fall into this category. We can determine if you need specialty lenses during a comprehensive contact lens examination.
People who have tried contacts before and given up due to discomfort or poor vision often benefit from a fresh evaluation. Advances in lens technology and fitting methods mean we can now help patients who were previously unsuccessful with contact lens wear.
The cornea is the clear front surface of your eye, and its shape plays a critical role in how well a contact lens fits. Some people have corneas that are steeper, flatter, or more irregular than average. Standard lenses are designed for typical corneal curves and may not center properly on eyes with unusual shapes.
- Very flat corneas can cause lenses to slide around or fall out easily
- Very steep corneas may make standard lenses fit too tightly and restrict oxygen flow
- Irregular corneal surfaces require lenses that can mask optical distortions
- Asymmetric corneas may need different lens designs for each eye
Your tears do more than keep your eyes moist. They help contact lenses glide smoothly across your eye surface and provide nutrients and oxygen to your cornea. People with insufficient tear production or poor tear quality often struggle with contact lens comfort.
We assess both the quantity and quality of your tears during your fitting evaluation. Some specialty lenses work better for dry eyes because they hold moisture against your cornea or reduce friction during blinking. In other cases, we may recommend treating your dry eye condition before attempting a contact lens fitting.
The position and movement of your eyelids influence how well a contact lens stays centered on your eye. Tight or loose eyelids, drooping upper lids, or unusual eyelid angles can all make standard lens fitting more difficult. Your lids essentially hold your contact lens in place with each blink, so their anatomy matters greatly.
During your fitting, we observe how your eyelids interact with trial lenses as you blink and look in different directions. Some patients need lenses with larger diameters or special edge designs to work with their unique eyelid structure.
Eye Conditions That Require Specialty Contact Lenses
Astigmatism occurs when your cornea has an oval shape rather than a round one, causing blurred or distorted vision at all distances. Mild astigmatism can sometimes be ignored with soft contact lenses, but moderate to high amounts require special toric lenses that correct the irregular curvature. These lenses must remain in a specific orientation on your eye to provide clear vision.
Irregular astigmatism is more complex and happens when your cornea has unpredictable curves across its surface. This condition often requires rigid lenses that create a new smooth optical surface over your irregular cornea.
Keratoconus is a condition where your cornea gradually thins and bulges into a cone shape. This progressive disorder creates highly irregular astigmatism that cannot be corrected well with glasses or standard soft lenses. Most patients with keratoconus need specialty rigid or scleral lenses to achieve functional vision.
- Early keratoconus may respond to specially designed soft or hybrid lenses
- Moderate cases typically require rigid gas permeable lenses
- Advanced keratoconus often benefits most from large scleral lenses
- We monitor your corneal shape regularly to adjust your lenses as needed
Dry eye disease causes your eyes to produce insufficient tears or poor quality tears that evaporate too quickly. Standard contact lenses can worsen dry eye symptoms by absorbing tears and creating friction against your cornea. Many dry eye patients were told they could never wear contacts.
Specialty options like scleral lenses can actually help dry eye symptoms by creating a fluid reservoir that bathes your cornea throughout the day. Some newer soft lens materials are also designed to retain moisture better and may work for patients with mild to moderate dry eye.
Giant papillary conjunctivitis is an inflammatory reaction on the inside of your upper eyelid, often triggered by contact lens deposits or mechanical irritation. You may notice increased lens awareness, mucus discharge, or your lenses moving around more than usual. This condition can develop even in people who previously wore lenses successfully.
Treatment typically involves stopping lens wear temporarily while the inflammation heals. When ready to resume wearing lenses, we may recommend daily disposable lenses, different lens materials, or specialty designs that reduce the mechanical irritation causing your symptoms.
Corneal refractive surgery like LASIK or PRK changes the shape of your cornea, making standard contact lens fitting more challenging if you later need vision correction. The central cornea becomes flatter while the peripheral cornea retains its original curve, creating an unusual transition zone. Cataract surgery can also alter corneal shape or leave residual astigmatism.
- We use detailed corneal mapping to understand your post-surgical shape
- Reverse geometry lenses are designed specifically for post-refractive surgery eyes
- Scleral lenses work well because they vault over the altered central cornea
- Custom soft lenses can be manufactured for some post-surgical cases
- Your surgical history helps us predict which lens designs will succeed
Corneal scars from injury, infection, or inflammatory conditions can create localized irregularities on your eye surface. These irregular areas scatter light and cause vision problems that glasses cannot fully correct. The scarring may also affect how comfortably a lens sits on your eye.
Rigid lenses that bridge over scarred areas often provide the best vision by creating a smooth optical surface. Scleral lenses work particularly well for eyes with extensive scarring because they rest on the white part of your eye rather than touching your damaged cornea.
How We Evaluate and Fit Hard-to-Fit Eyes
Fitting specialty contact lenses requires precise measurements of your corneal dimensions, curvature, and overall eye health. We use instruments that go far beyond the basic measurements taken for standard lens fittings. These detailed measurements allow us to design or select lenses that match your unique eye anatomy.
Modern diagnostic equipment provides us with digital maps and cross-sectional images of your cornea. This data helps us predict which lens designs will fit best and gives us a baseline to track any changes in your eye shape over time.
Corneal topography creates a detailed color-coded map showing the curvature at thousands of points across your cornea. This technology reveals subtle irregularities that would be impossible to detect with traditional measurement methods. We use topography maps to guide lens selection and to design custom lenses when needed.
- Elevation maps show how high or low each area of your cornea sits
- Curvature maps display steeper areas in warm colors and flatter areas in cool colors
- Difference maps help us see changes between visits
- Serial topography lets us monitor progressive conditions like keratoconus
We perform specific tests to measure both the quantity and quality of your tears. The tear breakup time test shows how long your tear film remains stable on your eye surface before developing dry spots. We may also measure your tear production volume and examine the oily layer that prevents tear evaporation.
Understanding your tear film helps us choose lens materials and wearing schedules that will work for your eyes. Some patients need to address tear film problems before contact lens fitting can succeed, while others can wear specialty lenses right away if we select appropriate designs.
We place diagnostic trial lenses on your eyes to evaluate fit, comfort, and vision. These temporary lenses let us see how your eyes respond to different materials, curvatures, and diameters. We observe the lens position and movement as you blink and look in various directions.
You will wear the trial lenses for a period of time while we assess your comfort and measure your vision. We may adjust the fit by trying different lens parameters or completely different lens types. This hands-on evaluation is essential because computer calculations alone cannot predict exactly how your eyes will respond.
Fitting specialty contact lenses is rarely completed in a single appointment. Your initial visit involves measurements and evaluation, followed by ordering custom lenses based on trial fitting results. When your lenses arrive, you return for a dispensing visit where we verify the fit and teach you insertion and removal.
- Custom or specialty lenses often take several weeks to manufacture
- Some lens designs require refinement after you have worn them for a few days
- Your eyes need time to adapt, and we must confirm the fit remains stable
- Follow-up visits help us catch potential problems before they affect your eye health
- Complex cases may need multiple trial lenses before we achieve the optimal fit
Specialty Contact Lens Options for Challenging Eyes
Toric soft lenses have different powers in different meridians to correct astigmatism. These lenses incorporate design features that keep them from rotating on your eye, ensuring the astigmatism correction stays aligned with your corneal curvature. Most people with mild to moderate astigmatism can achieve good vision with toric soft lenses.
Modern toric soft lenses come in many materials, including daily disposable options that reduce maintenance and allergy concerns. We may try several brands to find the one that provides the most stable vision and comfortable fit for your particular degree of astigmatism.
Rigid gas permeable lenses, also called RGP or GP lenses, are made from firm plastic materials that hold their shape on your eye. These lenses create a smooth optical surface that masks many types of corneal irregularities. They also allow excellent oxygen transmission to keep your cornea healthy during lens wear.
- RGP lenses provide sharper vision than soft lenses for many people
- They resist protein and lipid deposits better than soft materials
- Custom RGP lenses can be designed for almost any corneal shape
- Most patients require an adaptation period to become comfortable with rigid lenses
Scleral lenses are large rigid lenses that rest on the white sclera of your eye and vault over your entire cornea without touching it. The space between the lens and your cornea fills with sterile saline solution, creating a liquid bandage that protects your cornea and provides excellent comfort. These lenses work especially well for very irregular corneas and severe dry eye.
Despite their larger size, most patients find scleral lenses very comfortable once they learn to insert them. The lenses rarely fall out because they tuck under your eyelids, and they provide stable vision because their size prevents much movement during blinking.
Hybrid contact lenses feature a rigid gas permeable center surrounded by a soft lens skirt. This design aims to provide the crisp vision of rigid lenses with comfort approaching that of soft lenses. The soft outer portion helps the lens stay centered and comfortable on your eye.
We may recommend hybrid lenses for patients with irregular astigmatism who find standard rigid lenses uncomfortable or who struggle with rigid lens centering problems. These lenses require specific care routines and handling techniques that we will teach you.
Custom soft lenses are individually manufactured based on your specific eye measurements and prescription needs. Unlike mass-produced lenses that come in limited parameter combinations, custom lenses can be made in nearly any diameter, curvature, and power. This flexibility helps us fit eyes that fall outside the range of standard soft lens designs.
- Custom lenses take longer to receive than standard lenses
- They can correct higher amounts of astigmatism than standard toric lenses
- Specialized custom lenses exist for post-surgical eyes and high prescriptions
- The cost is typically higher than standard soft contact lenses
- Replacement lenses must be reordered rather than purchased off the shelf
Prosthetic contact lenses can improve the appearance of eyes with cosmetic concerns from injury, disease, or congenital conditions. These lenses may have opaque colored portions that mask corneal scars or irregular pupils, with clear areas that allow light to pass through to your functional parts of your eye. Some also incorporate vision correction.
Beyond cosmetic benefits, prosthetic lenses can reduce light sensitivity in damaged eyes and improve vision in some cases by blocking light that enters through abnormal pathways. We custom design these lenses to match your other eye and meet your visual and comfort needs.
Wearing and Caring for Specialty Contact Lenses
Each type of specialty lens requires specific handling techniques. We will teach you the proper method for your particular lens type and watch you practice until you can insert and remove your lenses confidently and safely. Rigid and scleral lenses especially require different techniques than standard soft lenses.
Scleral lens insertion involves filling the lens bowl with sterile saline before placing it on your eye. This technique takes practice but becomes routine with repetition. We provide detailed instructions and often recommend videos or diagrams you can reference at home while you are learning.
Proper lens care prevents eye infections and keeps your lenses comfortable and functional. Each lens type requires specific cleaning solutions and care routines. We will recommend products that are compatible with your lens material and demonstrate the correct cleaning technique.
- Never use tap water on your contact lenses due to infection risk
- Rub and rinse your lenses even if using a no-rub solution for best results
- Replace your lens case regularly to prevent bacterial contamination
- Use only fresh solution each time you store your lenses
- Daily disposable lenses eliminate cleaning but cost more over time
Your eyes and brain need time to adjust to specialty contact lenses. Rigid lenses typically cause awareness or mild discomfort for the first few days to weeks as your eyelids adapt to the lens edge. Vision may also fluctuate initially as your tear film stabilizes over the lens surface.
We usually recommend a gradual wearing schedule, starting with a few hours per day and slowly increasing your wearing time as comfort improves. Contact us if your discomfort increases rather than decreases, as this may indicate a fit problem rather than normal adaptation.
Even well-fitted specialty lenses may require adjustments over time. Changes in your comfort, vision quality, or lens wearing time can indicate that your lens fit needs evaluation. You should notify our office if your lenses suddenly feel different or if you have trouble achieving the wearing time you previously enjoyed.
- Increasing redness or irritation after lens wear
- Lenses that move excessively or decentered more than before
- Vision that becomes less clear than it was initially
- Reduced comfortable wearing time compared to your usual experience
Regular follow-up appointments allow us to monitor your eye health and verify that your lenses continue to fit properly. We examine your cornea for any signs of stress or complications from lens wear. These visits also give you an opportunity to discuss any concerns about comfort or vision.
Many specialty lens patients need more frequent follow-up than standard contact lens wearers, especially during the first year. Your individual schedule depends on your eye condition, lens type, and how well your eyes adapt to lens wear.
Certain symptoms indicate a potentially serious problem that needs urgent evaluation. Remove your contact lenses immediately and contact our office if you experience sudden vision changes, significant pain, or signs of infection. Prompt attention to these warning signs can prevent serious complications.
- Sudden decrease in vision that does not clear with blinking or lens removal
- Eye pain that persists after removing your lenses
- Intense light sensitivity or seeing halos around lights
- Excessive redness, especially if it worsens over hours
- Discharge that is yellow, green, or thick and sticky
Frequently Asked Questions
Coverage for specialty contact lenses varies widely among insurance plans. Some plans cover medically necessary lenses for conditions like keratoconus or post-surgical irregular astigmatism, while standard cosmetic lens benefits may not apply to custom or specialty designs. We can provide documentation of medical necessity when appropriate to support your insurance claim, but you should verify your specific benefits before proceeding with a specialty lens fitting.
Adjustment time depends on your lens type and individual sensitivity. Soft specialty lenses often feel comfortable within days, while rigid lenses typically require one to three weeks before your eyes fully adapt. Scleral lenses usually feel comfortable immediately despite their size, though learning to handle them takes practice. Your brain also needs time to adapt to new visual input, which can take several weeks regardless of physical comfort.
Absolutely, and many patients who failed with contacts years ago can now succeed thanks to advances in lens technology and fitting methods. Your previous experience helps us understand what did not work and guides us toward better options. We encourage anyone interested in contacts to get a current evaluation, even if they were previously told contact lens wear was impossible for their eyes.
Specialty lenses typically cost more initially than standard contacts, but maintenance costs vary by lens type. Rigid lenses and scleral lenses last one to two years with proper care, so their daily cost decreases over time despite higher upfront expense. Custom soft lenses usually need replacement on a schedule similar to standard soft lenses but cost more per lens. Daily disposable specialty lenses offer convenience but represent the highest ongoing cost.
Most patients can switch between specialty contacts and glasses as needed. Some rigid lens wearers experience temporary vision changes when they remove their lenses due to corneal molding effects that resolve within hours. We will advise you if your particular lens type affects your glasses vision, but this rarely prevents occasional alternating between the two correction methods.
Progressive conditions like keratoconus may require lens modifications or completely new lens designs as your corneal shape changes. We monitor your eye health and corneal topography at regular intervals to detect changes early. Many patients with stable conditions wear the same lens design for years with only minor parameter adjustments, while those with progressive conditions may need new lenses every one to three years.
Getting Help for What Can Make Contacts Hard to Fit
If you have been told you cannot wear contact lenses or have struggled with previous fittings, we encourage you to schedule a specialty contact lens evaluation. Our eye doctor will assess your individual needs and discuss whether modern specialty lenses might work for your eyes. Many patients are pleasantly surprised to discover that solutions now exist for eyes that were considered impossible to fit in the past.