Antiandrogens and estrogens
Antiandrogens like cyproterone acetate, spironolactone, and bicalutamide can block the androgenic and anabolic effects of testosterone. Estrogens can reduce the effects of testosterone by increasing the hepatic production and in turn circulating levels of sex hormone-binding globulin (SHBG), a carrier protein that binds to and occupies androgens like testosterone and DHT, and thereby reducing free concentrations of these androgens. Pharmacology
Pharmacodynamics
Testosterone is a high affinity ligand for and agonist of the nuclear androgen receptor (AR). In addition, testosterone binds to and activates membrane androgen receptors (mARs) such as GPRC6A and ZIP9. Testosterone is also potentiated via transformation by 5α-reductase into the more potent androgen DHT in so-called androgenic tissues such as the prostate gland, seminal vesicles, skin, and hair follicles. In contrast to the case of testosterone, such potentiation occurs to a reduced extent or not at all with most synthetic AAS (as well as with DHT), and this is primarily responsible for the dissociation of anabolic and androgenic effects with these agents. In addition to DHT, testosterone is converted at a rate of approximately 0.3% into the estrogen estradiol via aromatase. This occurs in many tissues, especially adipose tissue, the liver, and the brain, but primarily in adipose tissue. Testosterone, after conversion into DHT, is also metabolized into 3α-androstanediol, a neurosteroid and potent positive allosteric modulator of the GABAA receptor, and 3β-androstanediol, a potent and preferential agonist of the ERβ.
This also ensures that important things such as letters are not completely hidden behind any scotomas (small defects in parts of the functioning visual field),  and reduces the chances of getting lost in the text. However, the simplification of the view should not be done in such a way that it requires too rapid a movement to navigate around a large document, since too much motion can cause other problems (see above). In viewing an array of objects, people with CVI can more easily see them if they only have to look at one or two at a time. People with CVI also see familiar objects more easily than new ones. Placing objects against a plain background also makes them easier for the person with CVI to see. For the same reason (simplified view), the person may also dislike crowded rooms and other situations where their functioning is dependent on making sense of a lot of visual clutter. Visual processing can take a lot of effort. Often the person has to make a conscious choice about how to divide mental effort between making sense of visual data and performing other tasks. For some people, maintaining eye contact is difficult, which can create problems in Western culture (for example, bonding can be difficult for some parents who have an infant with CVI, and lack of contact in an older child can cause others to regard him or her with suspicion).