Masturbation & Blindness?: Fascinating Investigation

Masturbation & Blindness?: Fascinating Investigation January 21, 2022

Warning: graphic (albeit “scientifically expressed”) sexual content.

By the way, I’ve written about masturbation and the traditional biblical / Christian moral condemnation of it many times, for those who may be interested. The Christian view on this matter can be defended, and in my capacity as an apologist I do precisely that. There are always two sides to every “story” aren’t there?

It’s standard to make fun of the old saw that masturbation causes blindness. Educated Christians love to mock “fundamentalists” who may actually believe this, and atheists have a field day making fun of Christianity, via this belief. Generally speaking, and prima facie, it’s ridiculous, and “no one” believes it.

But I was wondering (as a great lover of the history and development of ideas), “where was this notion derived in the first place?” Generally, there is some sort of basis or rationale for beliefs, whether good or bad reasoning is employed.  In other words, they usually don’t come from nowhere. So what is (or might be) the origin of this curious belief?

In a Quora discussion called “Will excessive masturbation cause blindness?”, one of the commenters opined:

[A]round 1800 a Scottish physician named John Burns (1774–1850) put forth the idea that sexual excess caused dimness of vision. The phenomenon was named Burn’s Amourosis.

I did some Google searching today, and to my surprise, there is an actual (broad / somewhat related) scientific case to be made, which ties a sexual practice related to ejaculation to visual maladies. These are scientists reporting the phenomenon, not me. Perhaps old Dr. Burns was onto something after all?

The connection involves the Valsalva maneuver, which (according to Wikipedia) “is performed by moderately forceful attempted exhalation against a closed airway, usually done by closing one’s mouth and pinching one’s nose shut while expelling air out as if blowing up a balloon.” Urologist Dudley Seth Danoff referred to this and related it to deliberately delayed ejaculation in his article, “A Tried-And-True Technique For Delaying Orgasm” (Tower Urology, no date):

In order to delay reaching this point of ejaculatory inevitability, one must get extremely close to the threshold of ejaculatory inevitability and then halt all stimulation and relax all muscles of the perineum and lower back before resuming direct stimulation. . . .

Another approach is called the Valsalva maneuver. Again, one is brought close to the point of ejaculatory inevitability and then increases abdominal pressure by bearing down as if one were having a bowel movement (without, of course, having one).

Luke Michaels et al, in their article, “Postcoital visual loss due to valsalva retinopathy” (BMJ Case Reports, 10-23-14) explore this connection:

During orgasm the valsalva manoeuvre can produce a sudden increase in retinal venous pressure resulting in vessel rupture and haemorrhagic retinopathy. . . .

[P]opular culture would suggest patients are more aware of sex-induced valsalva retinopathy than physicians with folklore stating that excess masturbation can lead to blindness. Reports of this belief date back hundreds of years with a causal relationship only being investigated in recent years.

The relationship between sexual activity and retinal haemorrhage was first described in a case series of six patients by Friberg et al [in 1995] . . .

The retinal vasculature is also subject to these effects and significant increases in pressure can cause spontaneous rupture of parafoveal vessels resulting in haemorrhagic retinopathy and sudden loss of vision in one or both eyes. Valsalva retinopathy was first described by Duane in 1975 [see that article] who contemplated that ocular signs associated with sudden pressure elevations are subject to the force of compression throughout the valsalva manoeuvre and the previous state of the retinal vessels. The valsalva manoeuvre is used by the male during sexual intercourse to delay the ejaculatory response. . . .

Friberg et al hypothesised that on orgasm, abrupt increase in sympathetic outflow produces a sudden increase in preretinal vascular tone and pressure which when opposed by reduced venous outflow due to the valsalva manoeuvre can result in such a high elevation in retinal intravascular pressure that the retinal vasculature can rupture causing haemorrhage. This is the likely mechanism for post coital valsalva retinopathy.

I couldn’t access the entire referenced article by Friberg et al: “Sudden Visual Loss Associated With Sexual Activity” [Arch Ophthalmol. 1995;113(6):738-742], but I could access the Abstract:

Patients:  Six patients presented with a precipitous decrease in vision in one eye with no apparent predisposing factors. After obtaining a careful history, each patient revealed that he or she had been engaging in rigorous sexual activity immediately before experiencing the visual loss. . . .

Conclusions:  Sudden debilitating visual loss may occur during sexual activity from the rupture of retinal blood vessels in the macular region or from the development of vitreous bleeding from an induced retinal tear.

We know from Michaels’ description of this article, that Friberg referred to the Valsalva maneuver. Khalid Al Rubaie  and J. Fernando Arevalo, in their article, “Valsalva Retinopathy Associated with Sexual Activity” (Case Rep Med., 5-5-14), concurred:

Valsalva retinopathy is an induced preretinal hemorrhage that can occur in the macular area. It usually occurs secondary to Valsalva’s maneuver, a forcible exhalation effort against a closed glottis, causing a sudden rise in intrathoracic pressure. This unexpected increase in the venous pressure can rupture the perimacular vessels resulting in premacular hemorrhage. . . .

In summary, sexual activity is a well known risk factor for Valsalva retinopathy. Hemorrhage can be severe and might require surgical intervention.

Nili Ahmadabadi Mahdi et al, in the article, “Premacular Hemorrhage In Valsalva Retinopathy: A Study Of 21 Cases” (J. of Current Ophthalmology [2009 , Volume 21 , Number 3; 11-16] concluded:

This case series study included 21 eyes of 21 patients referred to retina clinic of Farabi eye hospital and two private eye clinics during 2001-2006 with sudden loss of vision and clinical diagnosis of premacular hemorrhage due to valsalva retinopathy. . . .

Premacular hemorrhage was a result of vigorous sexual activity in 10 patients (47.6%), . . .

The Valsalva maneuver, can, of course, be applied during male masturbation, since the male is the one using it, in any event. I found one such case which involved exactly that, with the result being an eye disorder:

A 13-year-old male with no previous medical history presented to an emergency department with acute-onset, painless vision loss in his right eye. On presentation, visual acuity in the involved eye was 20/200 [which means he was legally blind in that eye], . . .

Although the clinical assessment was suggestive of Valsalva retinopathy (see sidebar), the patient and his parents denied any history of antecedent Valsalva-type maneuvers or trauma. . . .

Upon questioning, he reported engaging in repeated episodes of vigorous autoerotic activity preceding the onset of his vision loss. Reassurance was provided that the old wives’ tale about masturbation was inaccurate (well, sort of). (Ehsan Rahimy, MD, “The Case of the Old Wives’ Tale”, New Retina MD, July 2017)

So there you have it. Take it for what it’s worth. Nothing like science . . .


Practical Matters: Perhaps some of my 3,900+ free online articles (the most comprehensive “one-stop” Catholic apologetics site) or fifty books have helped you (by God’s grace) to decide to become Catholic or to return to the Church, or better understand some doctrines and why we believe them.

Or you may believe my work is worthy to support for the purpose of apologetics and evangelism in general. If so, please seriously consider a much-needed financial contribution. I’m always in need of more funds: especially monthly support. “The laborer is worthy of his wages” (1 Tim 5:18, NKJV). 1 December 2021 was my 20th anniversary as a full-time Catholic apologist, and February 2022 marked the 25th anniversary of my blog.

PayPal donations are the easiest: just send to my email address: You’ll see the term “Catholic Used Book Service”, which is my old side-business. To learn about the different methods of contributing, including 100% tax deduction, etc., see my page: About Catholic Apologist Dave Armstrong / Donation InformationThanks a million from the bottom of my heart!


Photo credit: Kamil Saitov (5-4-18) [Wikimedia Commons / Creative Commons Attribution 4.0 International license]

Summary: Curious, I set out to investigate the alleged connection between masturbation & blindness. And I actually found a scientifically proven tie due to a breathing technique.

"Exactly right. He can't take any criticism back. I've dealt with the man for 27 ..."

Thoughts: James White & Cameron Bertuzzi ..."
"Mr. Armstrong, while I disagree with some parts of this article. I want to point ..."

Thoughts: James White & Cameron Bertuzzi ..."
"Thanks for the compliment. God bless!"

Reply to Gavin Ortlund’s “Relics: A ..."
"Dave, I totally agree with you. Also, I love reading your Patheos blogs. I haven't ..."

Reply to Gavin Ortlund’s “Relics: A ..."

Browse Our Archives