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Overview Introduction Graft-versus-host disease (GVHD) is a common complication after a bone marrow or stem cell transplant. In GVHD, immune cells from the donor attack the patient’s own tissues, including the eyes. Approximately 60–80 percent of patients with GVHD have ocular involvement. Patients with Ocular GVHD experience symptoms such as dryness, burning, photophobia, ocular pain, and […]

Introduction Amyotrophic Lateral Sclerosis (ALS), also known as Lou Gehrig’s disease, is a progressive neurodegenerative disorder that affects the nerve cells responsible for voluntary muscle control. As motor neurons degenerate, patients develop muscle weakness, loss of coordination, and ultimately paralysis. While ALS primarily affects the limbs, respiratory system, and swallowing function, it can also involve […]

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 […]

Ocular rosacea is a subtype of rosacea, a chronic inflammatory skin disorder that primarily affects the facial area. Ocular rosacea specifically targets the eyes and eyelids, causing a range of symptoms such as redness, dryness, burning, stinging and irritation. Ocular rosacea can be challenging to manage, as it often coexists with other eye conditions and […]

What are Progressive Lenses? Progressive lenses, sometimes called progressive glasses, are a type of eyeglass lens designed to provide clear vision at multiple distances, eliminating the need for separate spectacles for near, intermediate, and far vision.  Here’s a breakdown of the zones in progressive lenses: Progressive lenses are especially popular among people over 40 who […]

What are Scleral Lenses? Scleral lenses are a specialized type of contact lens made of rigid gas permeable (RGP) material. These lenses differ from traditional contact lenses in several key ways. Unlike other contacts that touch the cornea, scleral lenses are designed to vault over the entire cornea and rest on the white part of […]

Cosmetic contact lenses have become increasingly popular for their ability to transform and enhance the appearance of the eyes. They have been embraced by numerous celebrities over the years and hold a significant place in the history of entertainment and fashion. Beyond their aesthetic appeal, these lenses can add a boost of confidence and whimsy.  […]

Scleral lenses have been a game-changer for those suffering with irregular corneas such as keratoconus, ectasia, corneal transplants, surgical complications, trauma, scarring and so on providing improved sight to individuals. The introduction of wavefront-guided technology has brought scleral lenses to new heights.  CLEI is proud to have pioneered the integration of wavefront technology into scleral […]

Introduction Double vision, or diplopia, significantly disrupts daily life, turning routine activities such as reading, driving, or navigating crowded spaces into frustrating challenges. Prism contact lenses offer a discreet, innovative solution, advancing the management of this condition beyond traditional prism glasses. Understanding Double Vision and Its Causes Diplopia occurs when an individual perceives two images […]