Doctor insights on:
What Drugs Can Damage Eyesight And Lead To Blindness
Vision impairment and blindness are conditions in which a person cannot see well or see at all, even with glasses or contact lenses. If a person's best vision (with correction) out of either eye is only 20/70 - 20/200, he is impaired. If he can see no better than 20/200 or his visual field is no more than 20 degrees (severe "tunnel" vision), ...Read more
Powders & Potions: Wood alcohol (methanol) can contaminate moonshine whiskey and lead to rapid, permanent vision loss. Tobacco-alcohol amblyopia is a vitamin deficiency that may be partially reversible. Talc powder, as a contaminant of intravenous drugs, can cause capillary occlusion in the retina. Marijuana and hallucinogens alter the visual experience, but do not cause vision loss. Mj is good for glaucoma. ...Read moreSee 2 more doctor answers
Unlikely: Corneal abrasions are a loss of the surface skin of the cornea, usually just a small portion. Healing usually is rapid and complete. Rarely there can be scarring, and if it is central can affect focusing. If neglected, infection is possible which might lead to vision loss. Abrasions are extremely common, and vision changes afterwards are very rare. ...Read more
Some are illicit: Methanol can cause blindness, and anti-tb drugs like Ethambutol & rifampin. Steroids can cause glaucoma, antimalarials like Hydroxychloroquine can damage the macula. Talc retinopathy can occur with intravenous drug use. Direct retinal toxicity can occur from injected gentamicin. The precautionary principle demands withdrawal of potentially toxic drugs once diminished visual function is documented. ...Read more
Very many things: There are probably hundreds of injuries and diseases that may cause blindness. Macular degeneration affects 10% of people over 80. Glaucoma risk increases with age. Cataracts can cause blindness if not treated. There are dozens of other neurologic, degenerative, hereditary, infectious, and traumatic causes of blindness, far too many to list here. ...Read more
Sun exposure...: The most common eye cancer would be a basal cell carcinoma of the eyelid. This is largely related to excess sun exposure. A rare cancer in the eye is a retinoblastoma which can develop due to a mutation on chromosome 13, called the rb1 gene. This cancer has a good cure rate if detected early. A melanoma is another form of cancer in the eye that frequently harbor gnaq/gna11 mutations. ...Read more
maybe: I believe your best bet is to consult with a neurologist and then perhaps comprehensive psychological testing to determine the full extent of your cognitive abilities. Make sure they communicate with each other, and then have your neurologist guide your follow up. ...Read more
DEPENDS: Different drugs can do different things. But your asking says it worries you. Circumstances are different if you're talking about heroin, bath salts, lithium, ssri's - i can only gather that something in this scares you. A psychiatrist should know enough about drugst help you clarify. Get some help doing that and get some straight information. ...Read more
Variable: Uncontrolled diabetes is a precursor to the kind of blinding vascular events that can occur in the eyes. But diabetes has a variable course, and all are not susceptible in the same way so some might get into visual trouble in 3-5 years but others might take much longer. Best to follow the recommended visit to the eye doctor each year so that these treatable changes can be found early. ...Read more
Loss of vision reflects the inability to perceive images. Such a phenotype can be due to occlusive or barriers to light (e.g. cataracts) through retinal alterations (e.g. wet macular degeneration) to optic nerve lesions (e.g. from a pituitary adenoma) to central nervous system ...Read more
Sight is the sum of the light receptive and integrative capacity of the eye including best vision, color vision, night vision, depth vision, field of vision and the ability to track objects in motion. An ophthalmologist can measure these and determine the function of ...Read more
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