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Different methods to measure inter-pupillary distance

Inter-Pupillary Distance (IPD) is a crucial measurement in eyewear fitting, ensuring optimal lens alignment and visual comfort. Various methods exist to measure IPD, each with its advantages and suitability for different settings. Following are the different methods to measure inter-pupillary distance: 1. Manual Measurement Manual measurement is a traditional method where a ruler or pupillometer…

Aniseikonia- everything you need to know about

Aniseikonia is the perception of images of different sizes by each eye. The condition of perceiving different size of the images is associated with different refractive status of the eyes. When both the eyes have different refractive error, then this condition is called anisometropia. How refractive changes take place The changes in the refractive state…

Ophthalmic instruments- their uses and principles

Ophthalmic instruments play a pivotal role in diagnosing, treating, and maintaining eye health. Ophthalmoscope Uses: Ophthalmoscopes are fundamental tools that allow eye care professionals to examine the inner structures of the eye, including the retina, optic nerve, and blood vessels. This aids in the detection of conditions like retinal detachment, macular degeneration, and glaucoma. Principle:…

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Why is blind spot an important part of eye?

To understand blind spot, it is important to know that the eye consists of several components, including the cornea, lens, retina, and optic nerve. The retina, located at the back of the eye, plays a pivotal role in converting light into electrical signals that the brain interprets as images. Area with no photoreceptors The blind…

15 reasons why are my eyes blurry

Since the advancement in the field of technology and excessive use of mobile phones, playstations and computer usage; our eyes feel blurry most of the times. Here are 15 reasons which might answer you about the question ”why are my eyes blurry”. Referactive errors Nearsightedness, farsightedness, and astigmatism can lead to blurred vision. Regular eye…

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Indirect ophthalmoscopy

An indirect ophthalmoscopy is done with sophisticated optical device designed for in-depth examination of the eye’s posterior segment. Unlike direct ophthalmoscopy, where an instrument is placed directly on the patient’s eye, the indirect ophthalmoscope offers a broader field of view, enabling eye care professionals to visualize intricate details of the retina and vitreous humor. Main…

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Psudophakia

Pseudophakia is a condition that occurs when the natural lens of the eye, clouded by a cataract, is replaced with an artificial intraocular lens (IOL). This surgical intervention is a standard practice globally and has become a transformative solution for millions of people dealing with the visual impairment caused by cataracts. Pseudophakia in cataract surgery…

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Heterotropia

Heterotropia is a condition characterized by misalignment of the eyes. This visual disorder can affect people of all ages, impacting their vision and overall eye health. It is the type of strabismus and it is also known as menifest squint. Heterotropia occurs when the eyes are not properly aligned and do not work together. One…