Why is corneal thickness particularly important for a second laser procedure?

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Why is corneal thickness particularly important for a second laser procedure?
An enhancement procedure removes additional tissue from a cornea that has already undergone surgery. We consider the residual stromal bed, total corneal thickness, corneal shape, and expected treatment depth together to reduce the risk of corneal ectasia. No single measurement guarantees safety, and we do not recommend enhancement if the eye does not meet our safety criteria.

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33	Can I have an examination now and decide about surgery later? Of course. You can have your eyes examined, review your options, and take time to decide whether to proceed with surgery. In non-urgent cases, monitoring or nonsurgical treatment may be appropriate. U...
32	What is the difference between LASIK, LASEK, and SMILE? LASIK reshapes the cornea with a laser after creating a corneal flap. LASEK reshapes the cornea after removing the surface epithelium. SMILE-type procedures create a small disc of tissue, called a len...
31	Why does vision sometimes get worse again after laser eye surgery? There are several possible reasons, including progression of myopia, dry eye, residual astigmatism, corneal changes, and age-related changes in the natural lens. A vision test and detailed corneal exa...
30	Can glare and halos that started after LASIK be treated? Additional treatment may be considered if glare and halos are related to an irregular cornea or the position of the original treatment zone. However, dry eye, pupil size, or changes in the natural len...
29	What are my options if another laser procedure is not safe for my corneas? If further corneal laser treatment is not appropriate, glasses, contact lenses, or an implantable lens may be considered, depending on the eye. If corneal ectasia is suspected, stabilizing the cornea ...
28	When is the right time to have cataract surgery? A cataract diagnosis does not always mean you need surgery right away. Surgery is usually considered when changing your glasses no longer provides satisfactory vision or when daily activities such as ...
27	Why do I need a retinal examination before cataract surgery? Retinal conditions such as epiretinal membrane, age-related macular degeneration, and diabetic retinopathy can affect visual outcomes and the choice of IOL. When indicated, we perform a dilated retina...
26	Do I need a new IOL if I develop a secondary cataract? What is commonly called a “secondary cataract” is usually posterior capsule opacification (PCO). When treatment is needed, it can often be managed with a YAG laser capsulotomy rather than an IOL excha...
25	Can an intraocular lens still be exchanged many years after cataract surgery? An older IOL may still be exchanged, but surgery can become more challenging as adhesions develop between the lens and capsular bag over time. We compare the likely benefits and risks of exchange and ...
24	If there is bleeding inside my eye, will I need surgery right away? It depends on what caused the bleeding and the condition of the retina. In some cases, vitreous hemorrhage can be monitored while the blood clears. However, prompt evaluation and possibly surgery may ...
23	Can I be evaluated if problems develop after retinal surgery elsewhere? Yes. If you may have recurrent retinal detachment, persistent bleeding, or changes in the macula after surgery, we can examine your eye and review possible treatments. If available, please bring the d...
22	I have been told I may have retinal detachment. Where should I go? If retinal detachment is suspected or has been diagnosed, it is important to be examined promptly by an eye specialist who can assess the retina thoroughly. When choosing a clinic, check whether retin...