When To Have Cataract Eye Surgery and What Happens if You Wait?

The transparent cornea and lens in a healthy human eye bend light so that it falls directly on the retina. The retina acts like a screen, capturing visual information and converting it into signals the brain can interpret. This process of image formation occurs in a fraction of a second, and every part of the eye holds significance. Even a slight deviation from the natural setup distorts image processing. Cataract patients often experience a foggy image, blurred vision, halos, and glare around lights. Beginning with difficulties in reading and watching the screen, it progresses to blindness (partial or complete), making it difficult to perform their routine activities. The World Health Organization (WHO) states that cataracts are the leading cause of blindness worldwide.^[1]    

Why Have Cataract Surgery?

Cataract patients suffer a diminished quality of life with difficulty seeing nearby and far-off objects. The proteins in the clear lens of a healthy human eye break down and settle as a white, cloudy mass that either scatters or obstructs the light rays, causing hazy vision. If you ask us, will cataract surgery improve eyesight? Of course, it does! Ophthalmologists surgically remove this cloudy portion and replace it with a clear artificial lens to restore vision. Despite claims about herbal medicines, home remedies, or oral medications, the non-surgical cataract treatment hasn’t been proven to cure or reverse the symptoms.   

What Happens if You Don’t Have Cataract Surgery?

Untreated cataracts progress gradually, leading to partial or complete blindness. They start with impaired night vision, glare, and halos around lights, and difficulty in color perception. However, as the condition progresses, candidates experience difficulty performing routine tasks and are prone to accidents or falls. This is dangerous, especially in elderly people, and may lead to severe injury-related issues. Ophthalmologists at the American Academy of Ophthalmology state that advanced cataracts become hard, raising the risk of surgical complications.^[2] For some candidates, cataracts may block fluid drainage, increasing intraocular pressure and causing phacomorphic glaucoma. 

There are three main types of cataract surgery, each with different techniques and price points. Our detailed guide to laser cataract surgery and our cataract surgery cost breakdown will give you a better understanding.

Who Qualifies for Cataract Surgery?

Cataracts may develop at any age, and surgeries are more common in the elderly. Ophthalmologists recommend surgical cataract removal for patients experiencing severe vision difficulties. However, not every elderly person with cataracts qualifies for surgery. Ophthalmologists consider various factors, such as how severely the cataracts interfere with daily life, their stage, and whether your overall eye health supports a safe procedure. 

How Bad Do Cataracts Have To Be To Qualify for Surgery?

Cataract surgery may be considered mandatory treatment in any of the following conditions.

• A clear signal is noticing increased dependence on caretakers for simple routine tasks. You are no longer leading an independent life, reading, or driving safely. This could be when cataracts make it difficult to recognize faces, read labels, or watch a screen without strain, meaning they have crossed the threshold from inconvenience to functional impairment.
• Suppose driving after dark feels dangerous, and you've started avoiding it entirely. That's a strong clinical indicator and not just a lifestyle preference. Cataracts impairing night vision, with halos and glare around headlights and streetlights, make driving difficult and raise safety concerns. 
• You can no longer meet the legal vision standard for driving. Most countries require a minimum of 20/40 corrected vision to hold a driving license. If your cataract prevents you from reaching that threshold even with glasses, surgical removal isn't just recommended. In practical terms, it's necessary.
• Suppose the cataracts are too severe and interfering with other eye treatments. Dense cataracts block the ophthalmologist's view of the retina, making it difficult to monitor conditions such as diabetic retinopathy or age-related macular degeneration. In these cases, cataract removal is a required prerequisite for managing the other condition. 

Cataracts that are too severe and are curbing the quality of life are removed surgically. However, not every cataract needs to meet this criterion. Your ophthalmologist will weigh the severity of cataract against other factors such as overall medical health, age, and other conditions, before proceeding.  

When Should You Not Have Cataract Surgery?

Not every eye condition is the same. Nor is the patient's condition. Cataract surgery may not be a suitable choice in some cases. Ophthalmologists postpone or do not recommend cataract surgery in any of the following conditions:

• Other serious eye problems: Cataract removal increases the risk of complications in certain eye conditions. Ophthalmologists need to be extra cautious if you suffer from severe glaucoma, retinal detachment, or advanced macular degeneration. This is because cataract surgery may further damage the retina or fail to provide the expected results, as it does for normal patients.
• Health complications that may interfere with or worsen overall health: Cataract surgery is not an option for people with health problems such as a compromised immune system or conditions that interfere with healing. Candidates suffering from autoimmune diseases, uncontrolled diabetes, or high blood pressure are not the right candidates for cataract eye surgery.^[3] 
• Too-early cataracts that are not causing any significant issues: Cataracts in their early stage may not significantly impact daily activities.^[4] Surgical removal is typically not suggested. Ophthalmologists recommend visual aids such as eyeglasses or contact lenses to improve vision in these patients.

Is It Better To Have Cataract Surgery Early?

Yes, getting cataract surgery early is a smarter choice, but only when it starts interfering with daily activities. While it’s never “too early,” addressing the problem in its early stages comes with real advantages: a shorter procedure time, quicker healing, and a smoother recovery overall. Plus, early-stage immature cataracts require low-power phacoemulsifying lasers that exert lower pressure on the surrounding tissues. So the chances of post-surgical complications are also quite low. In contrast, delaying surgery until the cataract fully matures makes the removal more challenging.^[5] Most ophthalmologists recommend operating before the condition worsens, typically when vision loss starts to affect quality of life.

How Long Does It Take Before Cataracts Need Surgery?

The waiting period before cataract surgery typically depends on the case. A few cataracts progress slowly, with little impact on routine tasks. During this period, ophthalmologists generally wait a few months to years before surgical removal. They recommend visual aids to enhance vision, but you should never neglect period follow-ups. Routine eye check-ups every 6 months will help your ophthalmologist measure and understand cataract progression. In contrast, cataracts progress rapidly in some patients, requiring surgery within a few months. You should consult your ophthalmologist if you notice blurry vision and get a comprehensive eye examination. They will suggest an appropriate treatment plan specific to your case. Once you decide to proceed, your surgeon will walk you through the procedure, lens options, and recovery. 

Can Both Eyes Be Done for Cataract Surgery?

While cataract surgery on both eyes at the same time is technically possible, it's usually not recommended. Ophthalmologists usually allow a gap between the two eye surgeries. While this reduces complications and infection risk, it also smooths your healing journey. Imagine how difficult a surgical recovery would be with both your eyes covered with a protective shield. This is even more difficult in elderly patients who also suffer from mobility and balance concerns. Furthermore, allowing a gap provides ophthalmologists with the opportunity to achieve improved refractive correction and fine-tune the second IOL. 

How Long Between Cataract Surgery on Each Eye?

Most ophthalmologists suggest planning for a second cataract for the other eye, usually after 4 weeks from your first surgery. This period may vary depending on your healing ability, your refractive errors, and the severity of the cataract. Leaving a minimum 4-week gap between the two eye surgeries serves two distinct purposes. The first is medical, giving the initial eye time to heal, inflammation to settle, and vision to stabilize before subjecting the second eye to the same surgical stress. The second is strategic. Once the first eye has healed and settled at a stable refraction, your surgeon can fine-tune the IOL power selected for the second eye based on the actual outcome, not just the pre-operative prediction. This is particularly valuable if your first eye's result differed slightly from the measurements, which is more common than most patients realize.

When To Have Second Eye Cataract Surgery?

Eye surgeons plan the second-eye cataract removal around four weeks after the first, following a comprehensive evaluation. Your ophthalmologist will plan your second surgery based on the healing process and the severity of your cataract. They will monitor your recovery and progress toward stable vision before scheduling the second surgery. Signs of swelling, inflammation, or infection typically postpone the surgery appointments. They will also assess visual stability and ensure that the implanted IOL is functioning properly. Following strict aftercare and attending the scheduled follow-ups makes a real difference.

Where To Get Cataract Surgery?

Cataract eye surgery can be performed by a qualified, skilled, and certified ophthalmologist at local eye hospitals or specialized vision centers. Look for reputable hospitals with renowned ophthalmologists and well-equipped surgical facilities. Suppose you expect to have it covered by insurance; it's better to check the list of eye surgery providers approved by your insurer. Most insurances require patients to choose an in-network provider. At Envoy Health, we recommend checking the clinic's reputation, patient satisfaction rate, surgeon's qualifications, years of experience, and the technology they use for surgery to ensure better outcomes. 

Planning for Cataract Surgery

During the initial consultation, your ophthalmologist will examine your eye condition to determine your eligibility and will discuss the procedure, its pros and cons. Cataract surgery may be performed manually or using preset lasers. These methods vary in technique and treatment duration. Eye surgeons discuss the step-by-step procedure and brief you on the different artificial lenses (IOLs) and the cataract surgery costs. The procedure is painless, as the eye surgeons numb your eye and dilate the pupil with eye drops. They make incisions in your cornea to reach the internal portions of the eye and break down the cloudy cataracts using ultrasound waves. Ophthalmologists use special suction devices to remove fragmented cataracts and place an artificial intraocular lens within the capsule. The incisions and fragmentation methods vary slightly depending on the type of cataract surgery. 

What To Expect When You Have Cataract Surgery?

Expect slight discomfort or pressure in your eyes during the cataract eye surgery. Your surgery will be quick, taking 15-30 minutes. It will be virtually painless, performed while you are still awake. Since the eye doctor will numb your eyes using eye drops, you won’t be able to see anything, although you are aware of your surroundings. You might notice slight movement, light, or pressure in the eye. It is an outpatient procedure, so don’t expect an overnight hospital stay. More importantly, self-driving on the same day should be strictly avoided. Your eyes may still feel hazy, blurred with glare, and have halos. So have a friend or a family member by your side to drive you home safely. 

Final Word

Cataract eye surgery should not be delayed unnecessarily. It’s indeed a safe and highly effective procedure, especially when performed at the right time by an experienced ophthalmologist. While prescription glasses can help manage early-stage cataracts, waiting too long allows the cataract to become too dense, making it harder to break apart and increasing the risk of complications like corneal damage. Timely surgery ensures a smoother procedure, better outcomes, and faster recovery.

Don’t let cataracts cloud your life any longer. Sign up with Envoy Health; we will connect you with trusted cataract specialists. Book your consultation today, because a clearer vision shouldn’t have to wait.

References

1. Blindness And Vision Impairment
2. What Are The Risks Of Not Removing A Cataract?
3. Recognizing ‘high-risk’ eyes before cataract surgery
4. Cataract Surgery
5. Commentary: Managing rock hard cataracts