Readers have inquired about the effectiveness and safety of operations on the cornea to correct refractive errors and restore normal vision without glasses or contact lenses. Several different operations are now being used for this purpose.

All refractive corneal surgery reshapes the cornea to redirect light rays so that they focus on the retine....

Ocriplasmin (Jetrea – ThromboGenics) was recently approved by the FDA as an intravitreal injection for treatment of symptomatic vitreomacular adhesion. It is the first drug to be approved in the US for this indication.

The FDA has authorized use of the Valeda Light Delivery System (LumiThera), a multiwavelength photobiomodulation (PBM) device, to improve visual acuity in patients with dry age-related macular degeneration (AMD) who have best-corrected visual acuity (BCVA) of 20/32 to 20/70.

We reviewed brolucizumab (Beovu – Novartis) for treatment of neovascular (wet) age-related macular degeneration in our February 10 issue. On February 23, the American Society of Retina Specialists reported that 14 patients who received the drug have developed retinal vasculitis, a potentially vision-threatening complication.

Vascular endothelial growth factor (VEGF) is a principal mediator of neovascularization in wet age-related macular degeneration (AMD) and diabetic macular edema. It induces angiogenesis and increases vascular permeability and inflammation. VEGF inhibitors reduce leakage from blood vessels, prevent proliferation of new abnormal vessels, decrease swelling of the retina, and improve visual acuity in patients with neovascular (wet) AMD and diabetic macular edema. These drugs are given as periodic intravitreal injections with topical anesthesia.

Revakinagene taroretcel-lwey (Encelto – Neurotech), an intravitreal allogeneic cell-based gene therapy, has been approved by the FDA for treatment of idiopathic macular telangiectasia type 2 in adults. It is the first treatment to be approved in the US for this indication.

Age-related macular degeneration (AMD) has two major forms: dry or non-neovascular (~90% of patients) and wet or neovascular (~10% of patients).

Sildenafil citrate (Viagra - Pfizer) is the first oral drug approved by the FDA for treatment of erectile dysfunction. Alprostadil is also marketed for this indication but must be injected into the corpus cavemosum (Caverject) or pushed into the urethra (MUSE).

The FDA has approved aflibercept (a flib’ er sept; Eylea – Regeneron) for treatment of neovascular (wet) age-related macular degeneration (AMD).