Retina
The retina is a layer of photoreceptors cells and glial cells within the eye that captures incoming photons and transmits them along neuronal pathways as both electrical and chemical signals…
Uses of Trypan Blue Dye in Ophthalmology
Trypan blue is a type of acid-azo dye.It is an organosulfonate salt that is used as a crucial stain in biosciences to selectively colour dead tissues or cells blue. It…
ANOMALIES OF PUPILLARY REFLEX
Pupillary light reflex is used to assess the brain stem function. Abnormal pupillary light reflex can be found in optic nerve injury, oculomotor nerve damage, brain stem lesions, such as tumors,…
COMPONENTS OF A TRIAL LENS CASE
Before we delve into the components of a trial lens case, we have to understand what it is and what it is used for. So what is a trial lens…
Don’t Let Digital Devices Harm Your Vision: Expert Advice from an Optometrist
As an optometrist, I often encounter patients who complain about various visual symptoms related to their use of digital devices. This condition is known as Computer Vision Syndrome (CVS), a…
Don’t Let Digital Devices Harm Your Vision: Expert Advice from an Optometrist
As an optometrist, I often encounter patients who complain about various visual symptoms related to their use of digital devices. This condition is known as Computer Vision Syndrome (CVS), a…
Contact Lens Terminologies
Contact lenses are a popular alternative to traditional eyeglasses for people who require vision correction. They are small, thin and curved lenses that are placed directly on the surface of…
TECHNIQUES OF FUNDUS EXAMINATION
The fundus is the most important part of the eye. It is situated interior surface of the eye . It is made up of the retina, macula, optic disc ,…
KERATOMETRY
Ophthalmometer or so called keratometer is a ophthalmic diagnostic instrument that measuring the curvature of the anterior surface of the cornea it’s an objective method .it was invented by the…
JACKSON CROSS CYLINDER
Jackson cross cylinder is a single low power lens, which is a combination of a plus cylinder and a minus cylinder of equal power with axis perpendicular to each other,…
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