Category: Keratoconus

Introduction Keratoconus is an eye condition characterized by thinning and outward bulging of the cornea into a cone shape, disrupting vision by inducing irregular astigmatism, nearsightedness, sensitivity to light, and distortion.  Traditionally, keratoconus was considered rare. However, a landmark pediatric study the doctors at CLEI Center for Keratoconus participated in challenges this assumption, demonstrating a […]

Keratoconus is a progressive eye condition where the cornea thins and bulges into a cone-like shape, causing vision distortion. While treatments such as corneal cross-linking (CXL) can slow or stop the progression, your daily habits also play a significant role in protecting your eyes. Small lifestyle adjustments can make a meaningful difference in long-term eye […]

Each year, the National Keratoconus Foundation (NKCF) recognizes two clinicians—one ophthalmologist and one optometrist—who have made exceptional contributions to the keratoconus (KC) community. We’re proud to share that the 2025 Ophthalmology recipient of the NKCF Keratoconus Doctor of the Year Award is our very own Dr. Steven Greenstein. Dr. Greenstein is a leading cornea and […]

Overview Can people with keratoconus drive safely? Keratoconus and driving need not be mutually exclusive paths. With vigilant eye care, the right corrective technology, and practical road strategies, you can maintain the freedom of the open road while protecting yourself and fellow travelers. Why This Topic Matters For most of us, driving equals independence. Yet […]

This article highlights advancements in wavefront-guided scleral lenses, summarizing the pioneering work of Dr. John Gelles and his team at the Cornea and Laser Eye Institute (CLEI). Their expertise and contributions have helped define the transformative potential of this technology for patients with complex corneal conditions. This summary draws from peer-reviewed publications and abstracts presented […]

Keratoconus is a progressive eye disease that affects the cornea, causing it to thin and bulge outward into a cone-like shape. This distortion leads to blurred vision, light sensitivity, and, in severe cases, significant vision loss. While the exact causes of keratoconus are complex and multifactorial, ultraviolet (UV) radiation has emerged as a contributing factor […]

Keratoconus is a progressive eye condition that can impact not only the patient but also their family members. For families, understanding keratoconus, risk factors, treatment options, and importance of early screening is essential for providing support and preventing complications. Understanding Vision with Keratoconus Keratoconus can have a massive impact on quality of life. Halo, glare, […]

Keratoconus is a progressive condition that weakens and thins the cornea, leading to an irregular corneal shape and distorted vision. If you have been diagnosed with keratoconus, it is vital to consider the risk of your children developing keratoconus and take proactive steps to safeguard their vision. Family history and early screening play pivotal roles […]

Overview Scleral lenses can dramatically improve vision and comfort for people with keratoconus, dry eye, and other corneal conditions—but putting them on and taking them off takes practice. Whether you’re new to lenses or looking for a refresher, here are some of the top tips covered in this guide: Scleral lenses are becoming increasingly being […]

Teaneck, NJ – The independent review board at NJ Top Docs has designated Steven A. Greenstein, MD, FACS—Medical Director and Director of Refractive Surgery at the Cornea & Laser Eye Institute (CLEI)—as a 2025 NJ Top Doc. This recognition places Dr. Greenstein among the most trusted ophthalmologists and LASIK surgeons in New Jersey and signals […]