What Is True about Viagra and Its Effect on Vision?

Viagra is known both for its positive and negative influences. Which of the kinds is eye-related? Read to find out what and when should be expected after you administer a single dose of this ED medication.

Viagra ED medication is involved with vision problems in some males, yet it doesn’t mean that you will go blind! Much is said and written concerning side effects and complications triggered by Sildenafil, however most of them occur in cases of wrong dosage administration. In most cases, Viagra leads to benefits only, when prescription recommendations are followed. So, make sure that you follow yours.

It All Starts with Viagra Overdose

There are several serious conditions that occur in cases of Viagra overdose:

• Nausea;
• Chest pain;
• Fainting;
• Feeling light-headed;
• Irregular heartbeat;
• Low blood pressure;
• Priapism (prolonged and painful erections that last for up to 4 hours);
• Cardiovascular events.

Whenever serious effects are developed, refuse from the consumption of blue pills and seek immediate medical assistance to prevent complications and even death.

How to manage and prevent overdose cases? The first and foremost thing you should do when overdose symptoms occur is to seek medical help. When symptoms aren’t properly treated, they lead to life-threatening complications.

Here are a few things that we suggest to prevent overdose. To start with, don’t take meds, unless you have a prescription. A dose must be administered just the way it was prescribed. Keep in mind, that Viagra pills do not cause erections instantly. They need time and sexual stimulation. It is also suggested not to combine ED pills with substances and meds that contribute to metabolism changes as well as changes in Viagra action mechanism. Refuse from grapefruit juice and alcohol, too.

Viagra and Vision Effects: What Does the Research Say?

The research was carried out by the School of Optometry and Vision Science’s specialists. It looked at the effects of Viagra on the retinas in mice. Genetically engineered mice with retinitis pigmentosa carrier status appeared to be more susceptible to the visual disturbances after Viagra administration than most normal mice. They had an increased level of the cytochrome C chemical that is regarded as the indicator of cell death.

Nevertheless, no sign of cells loss was noticed. The same refers to the change of retinal thickness in mice. This all means that the conducted research didn’t prove the fact that Viagra causes permanent degeneration of retina.

The amount of active ingredient used during the experiment was 5 times less than the equivalent recommended dose for ED sufferers. This is why it’s not clear whether the results will be similar at normal dose levels. The research was a durable one. It was concentrated on:

1. Causes of retinal degeneration;
2. Permanent visual changes;
3. Changes that may be experienced by ED sufferers.

And though, the crucial effects of Sildenafil on one’s vision ability wasn’t proven, all men are different. If any sudden decrease of vision or its loss is experienced, please contact your doctor immediately.

Who Is Prone to Visual Side Effects Caused by Viagra?

Side effects are always dose-related. Today Viagra pills are prescribed in three dosage types – 25, 50 and 100 mg pills. The greater the dosage is, the greater all the risks are.

The latest studies proved that visual adverse reactions appear in:

• 3% of males, who taken 25-50 mg pills;
• 11% of males, who take 100 mg pills;
• 50% of males, who take 200 mg doses;
• Around 100% of males, who take 600-800 mg doses.

Vision Changes in Males with Blood Vessel Problems

They say that there are several universal side effects for those males, who take Viagra:

1. Bluish-colored vision;
2. Light sensitivity.

As for now there are no proofs of eye damage after the administration of Viagra even in those males, who take extremely high doses.

Viagra pills lower one’s blood pressure and that was mainly why many specialists suspected that this medication can decrease the flow of blood to optic nerves that are responsible for vision control. It is said that such a decrease leads to the nerve damage.

Recently, 13 males have participated in the study conducted by Stanford University. The results showed that even very high Sildenafil doses didn’t influence the blood flow of optic nerves. Small variations in thickness were present. They indicated that some males may have vision changes, if they have the underlying blood vessel condition.

Still, some males have minor difficulties discriminating between the shades of green and blue. But it’s appeared later that they have trouble seeing between many other colors.

! Viagra is able to change the structure of blood vessels and the general blood pressure. The study had a very small group of participants, yet it still showed no or very little changes in the blood flow and blood vessels in all tested patients.

When and How Does Viagra Lead to Vision Changes?

The visual side effects occur after Sildenafil starts acting (in 30-60 minutes), but they are always short-lived ones and last for about 1-2 hours. Viagra is surely very effective in cases of ED treatment. It inhibits PDE-5 – an enzyme that enhances the effects of nitric oxide released during sexual stimulation. But the drug has milder effects on PDE-6 – an enzyme that is present in retinal photoreceptors. It may cause an increased concentration of cyclic cGMP and result in a depolarization of rod cells. The latter condition is widely known as an increased light sensitivity and the ‘blue vision’ condition.

Viagra always was and will be a reliable choice for impotence treatment in males of different age and status. But side effects are experienced along with positive ones by the vast number of users. Tests and researches proved that Sildenafil is relatively safe, but no case is the same. In case of any doubts as to Viagra safety and effects on your vision, consult your healthcare specialist, who’ll choose the right dosage, tell about additional warnings and precautions and help avoid complications that you are afraid of. Be sure that there’s a way to administer Viagra safely!