Definition Achromatopsia is an inherited retinal degeneration (IRD) characterised by partial or total colour blindness, in addition to other visual symptoms. The rod and cone photoreceptor cells are responsible for capturing the visual field. The rod cells perceive dim light (scotopic vision), are not sensitive to colour and are responsible …
Read More »Exotropia – Symptoms, Management, and Prevention
What is Exotropia? Exotropia is a type of strabismus (eye misalignment), where one eye turns, or deviates, outward (away from the nose). The deviation may be constant or intermittent, and the deviating eye may always be one eye or may alternate between the two eyes. The deviation or eye turn …
Read More »Anisometropia – Types, Symptoms, and Treatment
Definition of Anisometropia Anisometropia: The condition in which the two eyes have unequal refractive power. One eye may be myopic (nearsighted) and the other hyperopic (farsighted) or one eye may be markedly stronger than the other. Anisometropia is a serious concern in newborns and young children because it can lead to amblyopia (impaired …
Read More »Aphakia – Symptoms, Causes, Diagnosis, and Treatment.
What is called Aphakia? Aphakia is a condition in which you’re missing the lens of one or both of your eyes. You can be born that way or lose the lens due to an injury. Or your doctor might remove it during an operation for cataracts. When you have aphakia, …
Read More »Amblyopia or Lazy eye – Types, Complications and Treatment
Definition Amblyopia, also known as lazy eye, occurs when one eye becomes weaker than the other during childhood. The brain favors the better eye, thus, allowing the weaker eye to get worse over time. Early screening is important. This is because treatment is more effective when started early. Treatments include …
Read More »Myopia or Nearsightedness – Grades, Causes and Treatment
Definition Myopia, otherwise known as short-sightedness, is a common eye condition that causes objects in the distance to appear blurred while close objects are often seen clearly. It occurs when the eye has too much focusing power, either due to the eye being too long or the cornea being more …
Read More »Optic neuritis- Causes, Diagnosis and Management
Definition Optic neuritis is the inflammation of the optic nerve (the second cranial nerve). The inflammation causes a fairly rapid loss of vision in the affected eye, a new blind spot (a scotoma, usually in or near the center of the visual field), pain in the eyeball (often occurring with …
Read More »Thyroid Eye Disease (TED)-Definition, Symptoms and Treatment
Definition of Thyroid Eye Disease People with thyroid disease sometimes develop an eye condition that causes the immune system to attack the muscles and other tissues around the eyes. This inflammation can cause the eyeballs to bulge from their sockets. Rarely, it can be severe enough to cause vision loss. …
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