Refraction through spherical lenses
Lens: A piece of transparent material (such as glass) whose two opposite regular surfaces are either curved or one is curved and the other is flat and which is used…
Lens: A piece of transparent material (such as glass) whose two opposite regular surfaces are either curved or one is curved and the other is flat and which is used…
Introduction Low vision assessment is a systematic evaluation of a person who has permanent visual impairment that cannot be fully corrected by spectacles, contact lenses, medication, or surgery, but who…
Introduction – Retinal detachment is one of the most serious vision-threatening conditions encountered in eye care practice. As optometrists, we often see patients who initially present with subtle visual complaints,…
Visual impairment is a broad term that includes varying degrees of vision loss. Two commonly misunderstood conditions under this umbrella are low vision and blindness. Although they are often used…
1. Introduction to Low Vision: Low vision is a significant global public health concern that affects an individual’s ability to perform daily visual tasks even after standard refractive correction, medical…
Non-strabismic binocular vision disorders (NSBVDs) are subtle but clinically significant anomalies of the vergence and accommodative systems. Unlike strabismus, they do not involve a constant ocular deviation, yet they can…
Introduction Binocular vision is the foundation of comfortable, efficient, and coordinated visual function. In routine refraction, achieving equal clarity in both eyes is not enough—both eyes must work together in…
Corneal donation is a remarkable act of humanity in which a person donates their cornea after death to restore vision in individuals suffering from corneal blindness. The cornea is the…
Diabetic retinopathy (DR) is a common and serious eye disease caused by long-standing diabetes mellitus. It affects the retina, the light-sensitive layer at the back of the eye, and is…
Athletes live in a world where every millisecond matters, where clear vision can mean the difference between victory and defeat. For those struggling with glasses that fog up during intense…
Imagine a basketball player going up for a rebound, only to be hit by a stray elbow. Or a cyclist catching a pebble kicked up by the tire in front…