Late-night screen time may feel harmless, but it disrupts melatonin, shortens deep sleep, and strains your eyes. Dr. Keshav Narain of South Bay Retina explains how blue light and digital stimulation keep you awake—and why a screen-free night routine can restore sleep, boost health, and protect your vision.

Thyroid Eye Disease (TED) is often recognized by the classic “stare,” but it’s far more than a cosmetic concern. TED is an autoimmune condition where the immune system attacks tissues around the eyes, causing swelling, irritation, and sometimes double vision. In severe cases, it can even threaten sight. For patients, the impact goes well beyond appearance—affecting comfort, vision, and quality of life every day.

Bedtime battles with screens are something every parent knows. But those late-night scrolls and games can quietly disrupt kids’ sleep and strain their eyes.

Digital eye strain is a common side effect of long hours on screens, causing dryness, fatigue, and blurred vision. The 20-20-20 rule—taking a 20-second break every 20 minutes to look 20 feet away—offers a simple, effective way to relax your eyes and prevent discomfort.

San Jose | Eye flashes duration explained—learn how long flashes last, common causes, and when they may signal a retinal emergency.

San Jose | Nicotinamide, a form of vitamin B3, is emerging as a promising supplement for glaucoma. While it doesn’t lower eye pressure, research suggests it may protect the optic nerve by boosting cellular energy and supporting retinal ganglion cells. Early studies show safety and potential benefits, but larger clinical trials are still underway. Could this be the future of glaucoma care?

Wondering if Ozempic or Wegovy could harm your eyes? The truth may surprise you. While early concerns linked GLP-1 medications to rare vision problems, new research shows they may actually lower the risk of glaucoma and protect long-term eye health. Learn the early signs of glaucoma, what symptoms to watch for, and how regular eye exams can safeguard your vision.

Flashes of light in your vision can feel unsettling—and sometimes signal serious eye conditions. This guide walks you through what happens during an eye exam for flashes, the tests involved, and why timely evaluation is key to protecting your vision.

Understanding the Link Between Mental Strain and Visual Disturbances Have you ever noticed quick flashes of light in your vision, like sparkles or streaks, especially when you're extremely tired or stressed? While eye flashes—technically called photopsia —are often linked to changes inside the eye, such as problems with the retina or vitreous gel , many people wonder whether stress or fatigue could be the culprit behind these unsettling sensations. In this article, we’ll exp

Flashes of light in your vision can be alarming — but are they caused by a migraine aura or a retinal problem? Learn the key differences between retinal flashes and ocular migraines, their causes, and when to seek urgent care to protect your sight.

Understanding a Common Yet Surprising Part of Getting Older As we age, our bodies go through countless changes—some expected, some less so. One of the lesser-known but very common changes happens deep inside the eye, in a jelly-like substance called the vitreous gel . If you’ve ever noticed sudden flashes of light in your vision, especially as you’ve gotten older, this may be why. Let’s explore how aging affects the vitreous and why these visual flashes occur—plus when they

Understanding the Sudden Bursts of Light in Your Vision Have you ever seen sudden streaks, sparks, or flashes of light—like lightning bolts—out of the corner of your eye? These are known as eye flashes , and while they can be brief and harmless, they may also be a sign of something more serious happening inside the eye. In this post, we’ll explain what eye flashes are, what causes them, and when you should see an eye doctor. What Are Eye Flashes? Eye flashes , also called pho

Pituitary lesion vision loss occurs when a growth near the pituitary gland presses on the optic chiasm, disrupting the transmission of visual information to the brain. Early symptoms like peripheral vision loss, blurred vision, headaches, or hormonal changes can be subtle but may signal a serious underlying condition. At South Bay Retina, Dr. Keshav Narain uses advanced imaging, visual field testing, and close collaboration with specialists to detect and treat these issues be

When the “powerhouses” of your cells fail, your eyes can be among the first to suffer. Mitochondrial diseases disrupt the body’s ability to produce energy, putting the retina and optic nerve at risk. At South Bay Retina, Dr. Keshav Narain uses advanced diagnostics and personalized care to detect problems early, slow vision loss, and help patients protect their sight.

Eales Disease: A Rare Retinal Vasculitis Causing Vision Loss Imagine being in your twenties or thirties—healthy, active, and thriving—when suddenly, floaters or vision loss appear in one eye. For some, this is the first sign of Retinal Vasculitis, a rare yet serious retinal condition that can lead to lasting visual damage if not promptly diagnosed and treated. At South Bay Retina , Dr. Keshav Narain and his team specialize in recognizing and managing uncommon retinal diseases

Introduction: For centuries, new scientific discoveries have challenged our understanding of the world, much like Galileo's heliocentric theory revolutionized astronomy. In medicine, particularly ophthalmology, we are at a similar crossroads. Traditional approaches to eye diseases like glaucoma often focus on detecting damage after it has occurred. However, early glaucoma detection is emerging as a revolutionary paradigm—thanks to advancing technologies and a deeper understa

IIH, formerly called “pseudotumor cerebri,” is a neurological condition marked by elevated pressure inside the skull without an identifiable cause. This pressure affects the optic nerve, potentially leading to vision loss if not treated promptly.

Central serous chorioretinopathy (CSR) is a unique and increasingly common eye condition that primarily affects the macula, the central...

Constant screen time doesn’t just tire your eyes—it may also disrupt your sleep. Learn how digital eye strain affects rest and what you can do to fix it.

Traditional glaucoma diagnosis often comes too late. Many cases occur with normal eye pressure, making them easy to miss. Now, advanced tests like VEP and ERG can detect early optic nerve dysfunction—before permanent damage sets in. This shift marks a new era in eye care: from reacting to damage to preventing it altogether.