Sensory exotropia
Introduction-- Sensory exotropia is a condition of unilateral divergence as a sequela to loss of vision or long-standing poor vision in one eye. Cause-- sensory exotropia occurs when there’s an…
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…
Synoptophore
It is a useful orthoptics tool specifically for the diagnosing the subjective and objective angles of squint. This is the instrument that performs a comprehensive assessment of binocular vision by…
WHAT KIND OF OBSERVATION DURING FUNDUS EXAMINATION
Funduscopic examination is a routine part of every doctor’s examination of the eye, not just the ophthalmologist’s. It consists exclusively of inspection. One looks through the ophthalmoscope which is simply…
Aqueous Humour
Aqueous humour is a clear, watery fluid that fills the anterior and posterior chambers of the eye. It is produced by the ciliary processes of the ciliary body, a structure…
OCULAR MANIFESTATION OF SYSTEMIC INFECTIONS
The eyes are a window to the soul, and they can also provide important clues to the presence of systemic infections. Many infections can cause ocular manifestations, which are changes…
Retinoblastoma
Retinoblastoma is a cancer of the eye that is usually diagnosed by the age of 6 years, with the majority of these cases seen by age 3 year. The disease…
ASPHERIC LENSES
Aspheric lenses have non-spherical shapes, and have a more complex front surface, such as ellips, parabola, hyberbola, as well as toric which resembles a section of the surface of a…