Use of Cross-Polarized Light in Anterior Segment Photography

Use of Crossed Polarizers to Enhance Images of the Eyelids

“…As previously described 13, 14 , photographs through crossed polarizers decreased reflections from the corneal and conjunctival surfaces (Figure 2). …”

“…13 Polarized digital images using commercially available photography equipment can be easily acquired in many clinical settings. The isogyre in cornea can confirm the correct orthogonal orientation of the two polarizing filters 13 , when the cornea is fully visible in the image.…”

“…While reduction of corneal and conjunctival surface reflections from photography with crossed polarizers has been described previously 13 , this imaging technique has not been extensively applied to investigating conjunctival or corneal disease. Besides potential use in diagnosing eyelid pathology, removing reflections could improve the accuracy of objective assessment algorithms now being developed to quantify redness or other biomarkers from digital conjunctival and corneal photographs.…”

Use of Crossed Polarizers to Enhance Images of the Eyelids

“…As previously described 13, 14 , photographs through crossed polarizers decreased reflections from the corneal and conjunctival surfaces (Figure 2). …”

“…13 Polarized digital images using commercially available photography equipment can be easily acquired in many clinical settings. The isogyre in cornea can confirm the correct orthogonal orientation of the two polarizing filters 13 , when the cornea is fully visible in the image.…”

“…While reduction of corneal and conjunctival surface reflections from photography with crossed polarizers has been described previously 13 , this imaging technique has not been extensively applied to investigating conjunctival or corneal disease. Besides potential use in diagnosing eyelid pathology, removing reflections could improve the accuracy of objective assessment algorithms now being developed to quantify redness or other biomarkers from digital conjunctival and corneal photographs.…”

Measurement of skin stretch via light reflection

“…Linearly polarized light with cross polarizers has been used in lens photography to investigate the skin surfaces and to improve anterior segment photography. [19][20][21][22][23] Light that is reflected from the skin has two components. The first one, which maintains the polarization of the incident light, is the regular reflectance that comes predominately from the surface of the skin.…”

Quantitative polarization-sensitive super-resolution solid immersion microscopy reveals biological tissues’ birefringence in the terahertz range

“…THz birefringence might be inherent to a variety of biological tissues, including those from humans or animals (such as fibrous tissues of the muscle and tendon, capillaries and veins) 33 , 35 , or even those from plants (veins and capillaries) 33 , 51 . Thereby, besides the aforementioned applications in cognitomics, the polarization-sensitive THz SI microscopy holds a potential in other branches of medical imaging, including applications in ophthalmology (studying the cornea pathologies 52 ), oncodiagnosis (diagnosis of melanoma 53 , basal cell carcinoma 54 , lung cancer 55 , brain tumors 16 , etc. ), cardiovascular diseases (study disorders of the bladder wall 56 , or diabetic foot 7 ), and others.…”

Use of Crossed Polarizers to Enhance Images of the Eyelids

“…As previously described 13, 14 , photographs through crossed polarizers decreased reflections from the corneal and conjunctival surfaces (Figure 2). …”

“…13 Polarized digital images using commercially available photography equipment can be easily acquired in many clinical settings. The isogyre in cornea can confirm the correct orthogonal orientation of the two polarizing filters 13 , when the cornea is fully visible in the image.…”

“…While reduction of corneal and conjunctival surface reflections from photography with crossed polarizers has been described previously 13 , this imaging technique has not been extensively applied to investigating conjunctival or corneal disease. Besides potential use in diagnosing eyelid pathology, removing reflections could improve the accuracy of objective assessment algorithms now being developed to quantify redness or other biomarkers from digital conjunctival and corneal photographs.…”

Measurement of skin stretch via light reflection

“…Linearly polarized light with cross polarizers has been used in lens photography to investigate the skin surfaces and to improve anterior segment photography. [19][20][21][22][23] Light that is reflected from the skin has two components. The first one, which maintains the polarization of the incident light, is the regular reflectance that comes predominately from the surface of the skin.…”

Quantitative polarization-sensitive super-resolution solid immersion microscopy reveals biological tissues’ birefringence in the terahertz range

“…THz birefringence might be inherent to a variety of biological tissues, including those from humans or animals (such as fibrous tissues of the muscle and tendon, capillaries and veins) 33 , 35 , or even those from plants (veins and capillaries) 33 , 51 . Thereby, besides the aforementioned applications in cognitomics, the polarization-sensitive THz SI microscopy holds a potential in other branches of medical imaging, including applications in ophthalmology (studying the cornea pathologies 52 ), oncodiagnosis (diagnosis of melanoma 53 , basal cell carcinoma 54 , lung cancer 55 , brain tumors 16 , etc. ), cardiovascular diseases (study disorders of the bladder wall 56 , or diabetic foot 7 ), and others.…”

Use of Crossed Polarizers to Enhance Images of the Eyelids

“…As previously described 13, 14 , photographs through crossed polarizers decreased reflections from the corneal and conjunctival surfaces (Figure 2). …”

“…13 Polarized digital images using commercially available photography equipment can be easily acquired in many clinical settings. The isogyre in cornea can confirm the correct orthogonal orientation of the two polarizing filters 13 , when the cornea is fully visible in the image.…”

“…While reduction of corneal and conjunctival surface reflections from photography with crossed polarizers has been described previously 13 , this imaging technique has not been extensively applied to investigating conjunctival or corneal disease. Besides potential use in diagnosing eyelid pathology, removing reflections could improve the accuracy of objective assessment algorithms now being developed to quantify redness or other biomarkers from digital conjunctival and corneal photographs.…”

Measurement of skin stretch via light reflection

“…Linearly polarized light with cross polarizers has been used in lens photography to investigate the skin surfaces and to improve anterior segment photography. [19][20][21][22][23] Light that is reflected from the skin has two components. The first one, which maintains the polarization of the incident light, is the regular reflectance that comes predominately from the surface of the skin.…”

Quantitative polarization-sensitive super-resolution solid immersion microscopy reveals biological tissues’ birefringence in the terahertz range

“…THz birefringence might be inherent to a variety of biological tissues, including those from humans or animals (such as fibrous tissues of the muscle and tendon, capillaries and veins) 33 , 35 , or even those from plants (veins and capillaries) 33 , 51 . Thereby, besides the aforementioned applications in cognitomics, the polarization-sensitive THz SI microscopy holds a potential in other branches of medical imaging, including applications in ophthalmology (studying the cornea pathologies 52 ), oncodiagnosis (diagnosis of melanoma 53 , basal cell carcinoma 54 , lung cancer 55 , brain tumors 16 , etc. ), cardiovascular diseases (study disorders of the bladder wall 56 , or diabetic foot 7 ), and others.…”