Introduction The concept of contrast sensitivity pertains to patients’ visual perception, specifically their capacity to differentiate between items or patterns that exhibit varying levels of contrast. Contrast refers to the…
Introduction: The tear film is a thin fluid layer covering the ocular surface; it is the interface of the ocular surface with the environment. It is responsible for ocular surface…
Diabetes, a chronic condition characterized by high blood sugar levels, has widespread effects on the body. While most people are aware of its impact on organs like the heart, kidneys,…
The Hirschberg test is a simple, non-invasive clinical test used to evaluate ocular alignment and detect strabismus (ocular misalignment).Strabismus, commonly known as squint, is a condition where the eyes do…
The human eye is a complex and delicate organ, and every part of it plays an important role in maintaining clear vision. One such important aspect of eye health is…
Colour Vision Deficiency (CVD), commonly known as colour blindness, is a visual impairment where an individual has difficulty distinguishing certain colours. It occurs due to the improper functioning of cone…
Fusion: A Key Component of Binocular Vision Fusion is the process by which the brain combines the visual information from both eyes into a single, unified image. It is a…
Introduction Symblepharon is a severe ocular condition in which the conjunctiva adheres to the inner surface of the eyelid. The adhesion may cause discomfort, reduce the vision and in serious cases loss…
We live in a world where screens are an integral part of our daily lives. From smartphones and tablets to laptops and televisions, screens are ubiquitous, and their influence on…
Introduction: Aberrations are optical imperfections that causes light rays to deviate from their intended path leading to blurry or distorted images. They are of two types: Spherical aberration: Spherical…