Macular corneal dystrophy (MCD) is an inherited eye disease where cloudy deposits develop in the clear front window of the eye (the cornea). These gray-white ...

Brittle cornea syndrome type 1 (BCS1) is a very rare, inherited connective-tissue disorder where the clear front window of the eye (the cornea) is extremely ...

Brittle cornea syndrome is a very rare inherited disorder that makes the clear front window of the eye (the cornea) extremely thin and fragile. Because the ...

Prolonged electroretinal response suppression (PERRS) is a rare eye condition. After light shines in the eye, the retina should recover quickly. In PERRS, the ...

Difficulty seeing moving objects means a person can see still things fairly well, but when things move, they are hard to detect, follow, or judge. Some people ...

Bradyopsia means “slow vision.” People with this condition have very slow adjustment when light changes. When they come out of a dark room into bright light, ...

Västerbotten dystrophy is a rare inherited eye disease that damages the retina and gradually reduces vision. It usually begins in childhood with night ...

Bothnia retinal dystrophy (BRD) is a rare, inherited eye disease. It usually begins in childhood with night blindness and very slow dark adaptation. Over time, ...

Bosch-Boonstra-Schaaf optic atrophy–intellectual disability syndrome (BBSOAS / NR2F1-related disorder) written in very simple English. BBSOAS is a rare, ...

Tritanomaly is a blue–yellow color vision deficiency. Your eye has three kinds of cone cells to see color: red-sensing (L), green-sensing (M), and blue-sensing ...

A tritan defect is a problem with seeing and separating colors along the blue–yellow line. It happens when the short-wavelength (S) cones in the retina do not ...

Tritan colour blindness is a problem with telling blue from green and yellow from violet. In this condition, the short-wavelength cone cells in the retina ...

Tritan color blindness is a problem with seeing blue and yellow correctly. It happens when the S-cones (short-wavelength cones) in the retina—or the ...

Dyschromatopsia means a problem seeing or telling colors apart. Colors may look faded, washed-out, wrong, or all very similar. Some people are born with it ...

Congenital tritanopia is a very rare, inherited color-vision condition. People with tritanopia cannot see blue and yellow in the normal way. The problem sits ...

A blue/yellow color vision defect means the eye and brain have trouble telling blue from green and yellow from violet. In the classic form (called “tritan”), ...

Blue-yellow dyschromatopsia is a problem in seeing or separating blue from yellow hues. In the inherited form, the short-wavelength (blue-sensing) cone cells ...

Blue color blindness is a problem with seeing short-wavelength (“blue”) light accurately. It happens when the S-cones (the blue-sensitive cone cells in the ...

Blindness–Scoliosis–Arachnodactyly syndrome is a very rare genetic condition that mainly affects the eyes and the skeleton. People develop progressive vision ...

Blepharophimosis-Epicanthus Inversus-Ptosis Syndrome (BPES) is a rare condition that affects the eyelids from birth. The eye openings are narrow from side to ...